chore: merge main

CHANGELOG.md

@@ -1,3 +1,101 @@
+## [0.119.0](https://github.com/propeller-heads/tycho-execution/compare/0.118.0...0.119.0) (2025-08-21)
+
+
+### Features
+
+* Add BytecodeExporter to TestUtils ([cea964e](https://github.com/propeller-heads/tycho-execution/commit/cea964e0a54a75b1bd89007794daf467b812f021))
+
+## [0.118.0](https://github.com/propeller-heads/tycho-execution/compare/0.117.0...0.118.0) (2025-08-21)
+
+
+### Features
+
+* Use Arc instead of & for protocol_state in Swap ([a2a5319](https://github.com/propeller-heads/tycho-execution/commit/a2a53195edbc631bea8fbc758a3bf5ee33a87dda))
+
+
+### Bug Fixes
+
+* Updates to new datatype after merging main ([e9c1a39](https://github.com/propeller-heads/tycho-execution/commit/e9c1a39608bba786bbed2b53c4596e94ddcbe03c))
+
+## [0.117.0](https://github.com/propeller-heads/tycho-execution/compare/0.116.0...0.117.0) (2025-08-21)
+
+
+### Features
+
+* implement `SwapEncoder` for `Hashflow` ([93db953](https://github.com/propeller-heads/tycho-execution/commit/93db953c620f4d52e8852ff8148f2dfdbc580029))
+
+
+### Bug Fixes
+
+* in bebop's encode_swap, fail early if router address is not present ([c013bf7](https://github.com/propeller-heads/tycho-execution/commit/c013bf707225b171e76f3f3dac88624b6a3458dc))
+* in hashflow's encode_swap, fail early if router address is not present ([c506f2c](https://github.com/propeller-heads/tycho-execution/commit/c506f2c048a20d1ffd066d2903d2cc469fd167ed))
+* in HashflowExecutor, _balanceOf must use `trader` address instead of the executor's to get the balance ([a09d648](https://github.com/propeller-heads/tycho-execution/commit/a09d648f3c50f87b392c7c5eb14af07307c5ccea))
+
+## [0.116.0](https://github.com/propeller-heads/tycho-execution/compare/0.115.0...0.116.0) (2025-08-19)
+
+
+### Features
+
+* Bebop executor in base ([c974312](https://github.com/propeller-heads/tycho-execution/commit/c974312a377d950948e76dd1dbb3303421f9f5f8))
+* Support Bebop quote through IndicativelyPriced state ([2292061](https://github.com/propeller-heads/tycho-execution/commit/22920617ebca35199a8cc927245cfa7e6209ade8))
+* Update BebopExecutor deployed address ([72b60aa](https://github.com/propeller-heads/tycho-execution/commit/72b60aa324d136ab999ff04339433a83743aee5e))
+
+
+### Bug Fixes
+
+* Add bebop to protocol specific addresses ([6e68d19](https://github.com/propeller-heads/tycho-execution/commit/6e68d199c90395a9204329e462e5027e81e61171))
+* Implement From<SimulationError> for EncodingError ([987956e](https://github.com/propeller-heads/tycho-execution/commit/987956eb0bea2a46115d160ea05db395ce17077a))
+
+## [0.115.0](https://github.com/propeller-heads/tycho-execution/compare/0.114.0...0.115.0) (2025-08-14)
+
+
+### Features
+
+* Deploy BebopExecutor ([f9ef8e0](https://github.com/propeller-heads/tycho-execution/commit/f9ef8e0dbdfb73db132f4932911fb5a666f6fa25))
+* implement encoder and executor with single order support ([7e7e3f0](https://github.com/propeller-heads/tycho-execution/commit/7e7e3f0e0187adc2f7966fd108e9edcb5e05f20f))
+* support multi and aggregate orders ([ad0a999](https://github.com/propeller-heads/tycho-execution/commit/ad0a9991da57348a026bc43d3ca230898822614e))
+
+
+### Bug Fixes
+
+* After merge fixes with SwapBuilder ([d301dfc](https://github.com/propeller-heads/tycho-execution/commit/d301dfcc44575157997d95a571633ef4e659a197))
+* After merging main fixes ([003ab7c](https://github.com/propeller-heads/tycho-execution/commit/003ab7cea82fec67dbd54bb1248f75e8c7c74c50))
+* **Bebop:** Fix AggregateOrder tests ([7024da3](https://github.com/propeller-heads/tycho-execution/commit/7024da395d9d959fc9edecc398f8a161f76d4de1))
+* **Bebop:** Fix encoding and tests ([e793478](https://github.com/propeller-heads/tycho-execution/commit/e79347842f74e05b078d3b2da4f6fad099a6927d))
+* cargo and forge fmt ([17e5354](https://github.com/propeller-heads/tycho-execution/commit/17e535494b5f2f211eef889c768f05f00843dc5b))
+* Fix test imports ([210d4fa](https://github.com/propeller-heads/tycho-execution/commit/210d4fa604de7610ce01fd918e57970dd5498e6b))
+* Move Bebop tests according to new setup ([01ab5d2](https://github.com/propeller-heads/tycho-execution/commit/01ab5d22b182072a65221f620df7fade3ab6fe7a))
+* SafeCast => V4SafeCast to fix build issue ([946c439](https://github.com/propeller-heads/tycho-execution/commit/946c4391e825661126fc30e013ac95e87e904fdc))
+* Simplify the BebopExecutor and fix Single tests ([76a09d0](https://github.com/propeller-heads/tycho-execution/commit/76a09d0402f34563a121f0973589b523ffdf3a8f))
+
+## [0.114.0](https://github.com/propeller-heads/tycho-execution/compare/0.113.0...0.114.0) (2025-08-14)
+
+
+### Features
+
+* add hashflow executor ([e03ecf4](https://github.com/propeller-heads/tycho-execution/commit/e03ecf48d50f08b739a9d862b4746c3a055ea6e9))
+
+## [0.113.0](https://github.com/propeller-heads/tycho-execution/compare/0.112.2...0.113.0) (2025-08-14)
+
+
+### Features
+
+* Add estimated_amount_in to Swap. Add SwapBuilder ([5eb9973](https://github.com/propeller-heads/tycho-execution/commit/5eb9973dbd5ca4eb2f4d15c3f4803b4bc7dfa1ea))
+
+## [0.112.2](https://github.com/propeller-heads/tycho-execution/compare/0.112.1...0.112.2) (2025-08-07)
+
+
+### Bug Fixes
+
+* Encode sequential swaps with unwrapping WETH correctly ([c42a5da](https://github.com/propeller-heads/tycho-execution/commit/c42a5dae6a55d315360eaaa510d9dcaf7ef8e4c0))
+
+## [0.112.1](https://github.com/propeller-heads/tycho-execution/compare/0.112.0...0.112.1) (2025-07-31)
+
+
+### Bug Fixes
+
+* Rename mainnet to ethereum in txServiceUrls for Safe ([51d9484](https://github.com/propeller-heads/tycho-execution/commit/51d9484de0b4c75b78dc8ca839f4ec7df40f972e))
+
 ## [0.112.0](https://github.com/propeller-heads/tycho-execution/compare/0.111.0...0.112.0) (2025-07-22)
 
 

Cargo.lock

@@ -4634,9 +4634,9 @@ checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
 [[package]]
 name = "tycho-common"
-version = "0.78.2"
+version = "0.81.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2af4c7e2c8e194a3e9dfc5911ff0ec273b7dd52acb71dfdcf21351dd78a49576"
+checksum = "68d44780891254a0155d1aaa765a8625b48672158b6e12ce4f06771e9d369ffa"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -4659,9 +4659,10 @@ dependencies = [
 
 [[package]]
 name = "tycho-execution"
-version = "0.112.0"
+version = "0.119.0"
 dependencies = [
  "alloy",
+ "async-trait",
  "chrono",
  "clap",
  "dotenv",
@@ -4676,6 +4677,7 @@ dependencies = [
  "thiserror 1.0.69",
  "tokio",
  "tycho-common",
+ "tycho-execution",
 ]
 
 [[package]]

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "tycho-execution"
-version = "0.112.0"
+version = "0.119.0"
 edition = "2021"
 description = "Provides tools for encoding and executing swaps against Tycho router and protocol executors."
 repository = "https://github.com/propeller-heads/tycho-execution"
@@ -37,17 +37,19 @@ tokio = { version = "1.38.0", features = ["full"] }
 chrono = "0.4.39"
 clap = { version = "4.5.3", features = ["derive"] }
 once_cell = "1.20.2"
-tycho-common = ">0.78.1"
+tycho-common = ">=0.81.6"
-
 alloy = { version = "1.0.6", features = ["providers", "rpc-types-eth", "eip712", "signer-local", "node-bindings"], optional = true }
+async-trait = { version = "0.1.88", optional = true }
 
 [dev-dependencies]
 rstest = "0.24.0"
+tycho-execution = { path = "../tycho-execution", features = ["test-utils"] }
 
 [features]
 default = ["evm"]
 evm = ["alloy"]
 fork-tests = []
+test-utils = ["async-trait"]
 
 [profile.bench]
 debug = true

config/executor_addresses.json

@@ -10,12 +10,15 @@
     "ekubo_v2": "0x263DD7AD20983b5E0392bf1F09C4493500EDb333",
     "vm:curve": "0x879F3008D96EBea0fc584aD684c7Df31777F3165",
     "vm:maverick_v2": "0xF35e3F5F205769B41508A18787b62A21bC80200B",
-    "vm:balancer_v3": "0xec5cE4bF6FbcB7bB0148652c92a4AEC8c1d474Ec"
+    "vm:balancer_v3": "0xec5cE4bF6FbcB7bB0148652c92a4AEC8c1d474Ec",
+    "rfq:bebop": "0xFE42BFb115eD9671011cA52BDD23A52A2e077a7c",
+    "rfq:hashflow": "0x5615dEB798BB3E4dFa0139dFa1b3D433Cc23b72f"
   },
   "base": {
     "uniswap_v2": "0xF744EBfaA580cF3fFc25aD046E92BD8B770a0700",
     "uniswap_v3": "0x647bffbf8bd72bf6341ecba8b0279e090313a40d",
-    "uniswap_v4_hooks": "0x7Dfa502736C7bd84DA1402F7524214215BC9534d"
+    "uniswap_v4_hooks": "0x7Dfa502736C7bd84DA1402F7524214215BC9534d",
+    "rfq:bebop": "0x489A3f531dA3873D6585BF3f8E0dEE48CAC6F7BC"
   },
   "unichain": {
     "uniswap_v2": "0x00C1b81e3C8f6347E69e2DDb90454798A6Be975E",

config/protocol_specific_addresses.json

@@ -5,8 +5,20 @@
     },
     "vm:curve": {
       "native_token_address": "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"
+    },
+    "rfq:bebop": {
+      "bebop_settlement_address": "0xbbbbbBB520d69a9775E85b458C58c648259FAD5F",
+      "native_token_address": "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"
+    },
+    "rfq:hashflow": {
+      "hashflow_router_address": "0x55084eE0fEf03f14a305cd24286359A35D735151"
+    }
+  },
+  "base": {
+    "rfq:bebop": {
+      "bebop_settlement_address": "0xbbbbbBB520d69a9775E85b458C58c648259FAD5F",
+      "native_token_address": "0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE"
     }
   },
-  "base": {},
   "unichain": {}
 }

config/test_executor_addresses.json

@@ -10,6 +10,8 @@
     "ekubo_v2": "0xa0Cb889707d426A7A386870A03bc70d1b0697598",
     "vm:curve": "0x1d1499e622D69689cdf9004d05Ec547d650Ff211",
     "vm:maverick_v2": "0xA4AD4f68d0b91CFD19687c881e50f3A00242828c",
-    "vm:balancer_v3": "0x03A6a84cD762D9707A21605b548aaaB891562aAb"
+    "vm:balancer_v3": "0x03A6a84cD762D9707A21605b548aaaB891562aAb",
+    "rfq:bebop": "0xD6BbDE9174b1CdAa358d2Cf4D57D1a9F7178FBfF",
+    "rfq:hashflow": "0x15cF58144EF33af1e14b5208015d11F9143E27b9"
   }
 }

examples/encoding-example/main.rs

@@ -7,7 +7,7 @@ use tycho_common::{
 };
 use tycho_execution::encoding::{
     evm::encoder_builders::TychoRouterEncoderBuilder,
-    models::{Solution, Swap, UserTransferType},
+    models::{Solution, Swap, SwapBuilder, UserTransferType},
 };
 
 fn main() {
@@ -44,6 +44,7 @@ fn main() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     // Then we create a solution object with the previous swap
@@ -87,56 +88,51 @@ fn main() {
     let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f")
         .expect("Failed to create DAI address");
 
-    let swap_weth_dai = Swap {
+    let swap_weth_dai = SwapBuilder::new(
-        component: ProtocolComponent {
+        ProtocolComponent {
             id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
             protocol_system: "uniswap_v2".to_string(),
             ..Default::default()
         },
-        token_in: weth.clone(),
+        weth.clone(),
-        token_out: dai.clone(),
+        dai.clone(),
-        split: 0.5f64,
+    )
-        user_data: None,
+    .split(0.5)
-        protocol_state: None,
+    .build();
-    };
+
-    let swap_weth_wbtc = Swap {
+    // Split 0 represents the remaining 50%, but to avoid any rounding errors we set this to
-        component: ProtocolComponent {
+    // 0 to signify "the remainder of the WETH value". It should still be very close to 50%
+    let swap_weth_wbtc = SwapBuilder::new(
+        ProtocolComponent {
             id: "0xBb2b8038a1640196FbE3e38816F3e67Cba72D940".to_string(),
             protocol_system: "uniswap_v2".to_string(),
             ..Default::default()
         },
-        token_in: weth.clone(),
+        weth.clone(),
-        token_out: wbtc.clone(),
+        wbtc.clone(),
-        // This represents the remaining 50%, but to avoid any rounding errors we set this to
+    )
-        // 0 to signify "the remainder of the WETH value". It should still be very close to 50%
+    .build();
-        split: 0f64,
+
-        user_data: None,
+    let swap_dai_usdc = SwapBuilder::new(
-        protocol_state: None,
+        ProtocolComponent {
-    };
-    let swap_dai_usdc = Swap {
-        component: ProtocolComponent {
             id: "0xAE461cA67B15dc8dc81CE7615e0320dA1A9aB8D5".to_string(),
             protocol_system: "uniswap_v2".to_string(),
             ..Default::default()
         },
-        token_in: dai.clone(),
+        dai.clone(),
-        token_out: usdc.clone(),
+        usdc.clone(),
-        split: 0f64,
+    )
-        user_data: None,
+    .build();
-        protocol_state: None,
+    let swap_wbtc_usdc = SwapBuilder::new(
-    };
+        ProtocolComponent {
-    let swap_wbtc_usdc = Swap {
-        component: ProtocolComponent {
             id: "0x004375Dff511095CC5A197A54140a24eFEF3A416".to_string(),
             protocol_system: "uniswap_v2".to_string(),
             ..Default::default()
         },
-        token_in: wbtc.clone(),
+        wbtc.clone(),
-        token_out: usdc.clone(),
+        usdc.clone(),
-        split: 0f64,
+    )
-        user_data: None,
+    .build();
-        protocol_state: None,
-    };
     let mut complex_solution = solution.clone();
     complex_solution.swaps = vec![swap_weth_dai, swap_weth_wbtc, swap_dai_usdc, swap_wbtc_usdc];
 

examples/uniswapx-encoding-example/main.rs

@@ -83,6 +83,7 @@ fn main() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_usdc_usdt = Swap {
         component: ProtocolComponent {
@@ -101,6 +102,7 @@ fn main() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     // Then we create a solution object with the previous swap

foundry/foundry.toml

@@ -7,7 +7,7 @@ evm_version = 'cancun'
 optimizer = true
 optimizer_runs = 200
 via_ir = true
-fs_permissions = [{ access = "read", path = "./test/assets" }]
+fs_permissions = [{ access = "read", path = "./test/assets" }, { access = "write", path = "./test" }]
 
 [profile.production]
 src = 'src'

foundry/scripts/deploy-executors.js

@@ -81,6 +81,11 @@ const executors_to_deploy = {
         },
         // Args: Permit2
         {exchange: "BalancerV3Executor", args: ["0x000000000022D473030F116dDEE9F6B43aC78BA3"]},
+        // Args: Bebop Settlement contract, Permit2
+        {
+            exchange: "BebopExecutor",
+            args: ["0xbbbbbBB520d69a9775E85b458C58c648259FAD5F", "0x000000000022D473030F116dDEE9F6B43aC78BA3"]
+        },
     ],
     "base": [
         // Args: Factory, Pool Init Code Hash, Permit2, Fee BPS
@@ -116,6 +121,11 @@ const executors_to_deploy = {
                 "0x000000000022D473030F116dDEE9F6B43aC78BA3"
             ]
         },
+        // Args: Bebop Settlement contract, Permit2
+        {
+            exchange: "BebopExecutor",
+            args: ["0xbbbbbBB520d69a9775E85b458C58c648259FAD5F", "0x000000000022D473030F116dDEE9F6B43aC78BA3"]
+        },
     ],
     "unichain": [
         // Args: Factory, Pool Init Code Hash, Permit2, Fee BPS

foundry/src/executors/BebopExecutor.sol

@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: BUSL-1.1
+pragma solidity ^0.8.26;
+
+import "@interfaces/IExecutor.sol";
+import "../RestrictTransferFrom.sol";
+import "@openzeppelin/contracts/utils/math/Math.sol";
+import {
+    IERC20,
+    SafeERC20
+} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
+import "@openzeppelin/contracts/utils/Address.sol";
+
+/// @title BebopExecutor
+/// @notice Executor for Bebop PMM RFQ (Request for Quote) swaps
+/// @dev Handles Single and Aggregate RFQ swaps through Bebop settlement contract
+/// @dev Only supports single token in to single token out swaps
+contract BebopExecutor is IExecutor, RestrictTransferFrom {
+    using Math for uint256;
+    using SafeERC20 for IERC20;
+    using Address for address;
+
+    /// @notice Bebop-specific errors
+    error BebopExecutor__InvalidDataLength();
+    error BebopExecutor__ZeroAddress();
+
+    /// @notice The Bebop settlement contract address
+    address public immutable bebopSettlement;
+
+    constructor(address _bebopSettlement, address _permit2)
+        RestrictTransferFrom(_permit2)
+    {
+        if (_bebopSettlement == address(0)) revert BebopExecutor__ZeroAddress();
+        bebopSettlement = _bebopSettlement;
+    }
+
+    /// @notice Executes a swap through Bebop's PMM RFQ system
+    /// @param givenAmount The amount of input token to swap
+    /// @param data Encoded swap data containing tokens and bebop calldata
+    /// @return calculatedAmount The amount of output token received
+    function swap(uint256 givenAmount, bytes calldata data)
+        external
+        payable
+        virtual
+        override
+        returns (uint256 calculatedAmount)
+    {
+        (
+            address tokenIn,
+            address tokenOut,
+            TransferType transferType,
+            uint8 partialFillOffset,
+            uint256 originalFilledTakerAmount,
+            bool approvalNeeded,
+            address receiver,
+            bytes memory bebopCalldata
+        ) = _decodeData(data);
+
+        _transfer(address(this), transferType, address(tokenIn), givenAmount);
+
+        // Modify the filledTakerAmount in the calldata
+        // If the filledTakerAmount is the same as the original, the original calldata is returned
+        bytes memory finalCalldata = _modifyFilledTakerAmount(
+            bebopCalldata,
+            givenAmount,
+            originalFilledTakerAmount,
+            partialFillOffset
+        );
+
+        // Approve Bebop settlement to spend tokens if needed
+        if (approvalNeeded) {
+            // slither-disable-next-line unused-return
+            IERC20(tokenIn).forceApprove(bebopSettlement, type(uint256).max);
+        }
+
+        uint256 balanceBefore = _balanceOf(tokenOut, receiver);
+        uint256 ethValue = tokenIn == address(0) ? givenAmount : 0;
+
+        // Use OpenZeppelin's Address library for safe call with value
+        // This will revert if the call fails
+        // slither-disable-next-line unused-return
+        bebopSettlement.functionCallWithValue(finalCalldata, ethValue);
+
+        uint256 balanceAfter = _balanceOf(tokenOut, receiver);
+        calculatedAmount = balanceAfter - balanceBefore;
+    }
+
+    /// @dev Decodes the packed calldata
+    function _decodeData(bytes calldata data)
+        internal
+        pure
+        returns (
+            address tokenIn,
+            address tokenOut,
+            TransferType transferType,
+            uint8 partialFillOffset,
+            uint256 originalFilledTakerAmount,
+            bool approvalNeeded,
+            address receiver,
+            bytes memory bebopCalldata
+        )
+    {
+        // Need at least 95 bytes for the minimum fixed fields
+        // 20 + 20 + 1 + 1 (offset) + 32 (original amount) + 1 (approval) + 20 (receiver) = 95
+        if (data.length < 95) revert BebopExecutor__InvalidDataLength();
+
+        tokenIn = address(bytes20(data[0:20]));
+        tokenOut = address(bytes20(data[20:40]));
+        transferType = TransferType(uint8(data[40]));
+        partialFillOffset = uint8(data[41]);
+        originalFilledTakerAmount = uint256(bytes32(data[42:74]));
+        approvalNeeded = data[74] != 0;
+        receiver = address(bytes20(data[75:95]));
+        bebopCalldata = data[95:];
+    }
+
+    /// @dev Modifies the filledTakerAmount in the bebop calldata to handle slippage
+    /// @param bebopCalldata The original calldata for the bebop settlement
+    /// @param givenAmount The actual amount available from the router
+    /// @param originalFilledTakerAmount The original amount expected when the quote was generated
+    /// @param partialFillOffset The offset from Bebop API indicating where filledTakerAmount is located
+    /// @return The modified calldata with updated filledTakerAmount
+    function _modifyFilledTakerAmount(
+        bytes memory bebopCalldata,
+        uint256 givenAmount,
+        uint256 originalFilledTakerAmount,
+        uint8 partialFillOffset
+    ) internal pure returns (bytes memory) {
+        // Use the offset from Bebop API to locate filledTakerAmount
+        // Position = 4 bytes (selector) + offset * 32 bytes
+        uint256 filledTakerAmountPos = 4 + uint256(partialFillOffset) * 32;
+
+        // Cap the fill amount at what we actually have available
+        uint256 newFilledTakerAmount = originalFilledTakerAmount > givenAmount
+            ? givenAmount
+            : originalFilledTakerAmount;
+
+        // If the new filledTakerAmount is the same as the original, return the original calldata
+        if (newFilledTakerAmount == originalFilledTakerAmount) {
+            return bebopCalldata;
+        }
+
+        // Use assembly to modify the filledTakerAmount at the correct position
+        // slither-disable-next-line assembly
+        assembly {
+            // Get pointer to the data portion of the bytes array
+            let dataPtr := add(bebopCalldata, 0x20)
+
+            // Calculate the actual position and store the new value
+            let actualPos := add(dataPtr, filledTakerAmountPos)
+            mstore(actualPos, newFilledTakerAmount)
+        }
+
+        return bebopCalldata;
+    }
+
+    /// @dev Returns the balance of a token or ETH for an account
+    /// @param token The token address, or address(0) for ETH
+    /// @param account The account to get the balance of
+    /// @return balance The balance of the token or ETH for the account
+    function _balanceOf(address token, address account)
+        internal
+        view
+        returns (uint256)
+    {
+        return token == address(0)
+            ? account.balance
+            : IERC20(token).balanceOf(account);
+    }
+
+    /**
+     * @dev Allow receiving ETH for settlement calls that require ETH
+     * This is needed when the executor handles native ETH swaps
+     * In production, ETH typically comes from router or settlement contracts
+     * In tests, it may come from EOA addresses via the test harness
+     */
+    receive() external payable {
+        // Allow ETH transfers for Bebop settlement functionality
+    }
+}

foundry/src/executors/HashflowExecutor.sol

@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: BUSL-1.1
+pragma solidity ^0.8.26;
+
+import "../RestrictTransferFrom.sol";
+import "@interfaces/IExecutor.sol";
+import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
+
+error HashflowExecutor__InvalidHashflowRouter();
+error HashflowExecutor__InvalidDataLength();
+
+interface IHashflowRouter {
+    struct RFQTQuote {
+        address pool;
+        address externalAccount;
+        address trader;
+        address effectiveTrader;
+        address baseToken;
+        address quoteToken;
+        uint256 effectiveBaseTokenAmount;
+        uint256 baseTokenAmount;
+        uint256 quoteTokenAmount;
+        uint256 quoteExpiry;
+        uint256 nonce;
+        bytes32 txid;
+        bytes signature; // ECDSA signature of the quote, 65 bytes
+    }
+
+    function tradeRFQT(RFQTQuote calldata quote) external payable;
+}
+
+contract HashflowExecutor is IExecutor, RestrictTransferFrom {
+    using SafeERC20 for IERC20;
+
+    address public constant NATIVE_TOKEN =
+        0x0000000000000000000000000000000000000000;
+
+    /// @notice The Hashflow router address
+    address public immutable hashflowRouter;
+
+    constructor(address _hashflowRouter, address _permit2)
+        RestrictTransferFrom(_permit2)
+    {
+        if (_hashflowRouter == address(0)) {
+            revert HashflowExecutor__InvalidHashflowRouter();
+        }
+        hashflowRouter = _hashflowRouter;
+    }
+
+    function swap(uint256 givenAmount, bytes calldata data)
+        external
+        payable
+        returns (uint256 calculatedAmount)
+    {
+        (
+            IHashflowRouter.RFQTQuote memory quote,
+            bool approvalNeeded,
+            TransferType transferType
+        ) = _decodeData(data);
+
+        // Slippage checks
+        if (givenAmount > quote.baseTokenAmount) {
+            // Do not transfer more than the quote's maximum permitted amount.
+            givenAmount = quote.baseTokenAmount;
+        }
+        quote.effectiveBaseTokenAmount = givenAmount;
+
+        if (approvalNeeded && quote.baseToken != NATIVE_TOKEN) {
+            // slither-disable-next-line unused-return
+            IERC20(quote.baseToken).forceApprove(
+                hashflowRouter, type(uint256).max
+            );
+        }
+
+        uint256 ethValue = 0;
+        if (quote.baseToken == NATIVE_TOKEN) {
+            ethValue = quote.effectiveBaseTokenAmount;
+        }
+        _transfer(
+            address(this), transferType, address(quote.baseToken), givenAmount
+        );
+        uint256 balanceBefore = _balanceOf(quote.trader, quote.quoteToken);
+        IHashflowRouter(hashflowRouter).tradeRFQT{value: ethValue}(quote);
+        uint256 balanceAfter = _balanceOf(quote.trader, quote.quoteToken);
+        calculatedAmount = balanceAfter - balanceBefore;
+    }
+
+    function _decodeData(bytes calldata data)
+        internal
+        pure
+        returns (
+            IHashflowRouter.RFQTQuote memory quote,
+            bool approvalNeeded,
+            TransferType transferType
+        )
+    {
+        if (data.length != 327) {
+            revert HashflowExecutor__InvalidDataLength();
+        }
+
+        transferType = TransferType(uint8(data[0]));
+        approvalNeeded = data[1] != 0;
+
+        quote.pool = address(bytes20(data[2:22]));
+        quote.externalAccount = address(bytes20(data[22:42]));
+        quote.trader = address(bytes20(data[42:62]));
+        // Assumes we never set the effectiveTrader when requesting a quote.
+        quote.effectiveTrader = quote.trader;
+        quote.baseToken = address(bytes20(data[62:82]));
+        quote.quoteToken = address(bytes20(data[82:102]));
+        // Not included in the calldata. Will be set in the swap function.
+        quote.effectiveBaseTokenAmount = 0;
+        quote.baseTokenAmount = uint256(bytes32(data[102:134]));
+        quote.quoteTokenAmount = uint256(bytes32(data[134:166]));
+        quote.quoteExpiry = uint256(bytes32(data[166:198]));
+        quote.nonce = uint256(bytes32(data[198:230]));
+        quote.txid = bytes32(data[230:262]);
+        quote.signature = data[262:327];
+    }
+
+    function _balanceOf(address trader, address token)
+        internal
+        view
+        returns (uint256 balance)
+    {
+        balance = token == NATIVE_TOKEN
+            ? trader.balance
+            : IERC20(token).balanceOf(trader);
+    }
+}

foundry/src/executors/UniswapV4Executor.sol

@@ -19,7 +19,8 @@ import {IHooks} from "@uniswap/v4-core/src/interfaces/IHooks.sol";
 import {PathKey} from "@uniswap/v4-periphery/src/libraries/PathKey.sol";
 import {IUnlockCallback} from
     "@uniswap/v4-core/src/interfaces/callback/IUnlockCallback.sol";
-import {SafeCast} from "@uniswap/v4-core/src/libraries/SafeCast.sol";
+import {SafeCast as V4SafeCast} from
+    "@uniswap/v4-core/src/libraries/SafeCast.sol";
 import {TransientStateLibrary} from
     "@uniswap/v4-core/src/libraries/TransientStateLibrary.sol";
 import "../RestrictTransferFrom.sol";
@@ -43,7 +44,7 @@ contract UniswapV4Executor is
 {
     using SafeERC20 for IERC20;
     using CurrencyLibrary for Currency;
-    using SafeCast for *;
+    using V4SafeCast for *;
     using TransientStateLibrary for IPoolManager;
     using LibPrefixLengthEncodedByteArray for bytes;
 

foundry/src/uniswap_x/UniswapXFiller.sol

@@ -60,10 +60,9 @@ contract UniswapXFiller is AccessControl, IReactorCallback {
         ResolvedOrder[] calldata resolvedOrders,
         bytes calldata callbackData
     ) external onlyRole(REACTOR_ROLE) {
-        require(
+        if (resolvedOrders.length != 1) {
-            resolvedOrders.length == 1,
+            revert UniswapXFiller__BatchExecutionNotSupported();
-            UniswapXFiller__BatchExecutionNotSupported()
+        }
-        );
 
         ResolvedOrder memory order = resolvedOrders[0];
 

foundry/test/Constants.sol

@@ -55,6 +55,7 @@ contract Constants is Test, BaseConstants {
     address WTAO_ADDR = address(0x77E06c9eCCf2E797fd462A92B6D7642EF85b0A44);
     address BSGG_ADDR = address(0xdA16Cf041E2780618c49Dbae5d734B89a6Bac9b3);
     address GHO_ADDR = address(0x40D16FC0246aD3160Ccc09B8D0D3A2cD28aE6C2f);
+    address ONDO_ADDR = address(0xfAbA6f8e4a5E8Ab82F62fe7C39859FA577269BE3);
 
     // Maverick v2
     address MAVERICK_V2_FACTORY = 0x0A7e848Aca42d879EF06507Fca0E7b33A0a63c1e;
@@ -124,6 +125,12 @@ contract Constants is Test, BaseConstants {
     // Permit2
     address PERMIT2_ADDRESS = 0x000000000022D473030F116dDEE9F6B43aC78BA3;
 
+    // Bebop Settlement
+    address BEBOP_SETTLEMENT = 0xbbbbbBB520d69a9775E85b458C58c648259FAD5F;
+
+    // Hashflow Router
+    address HASHFLOW_ROUTER = 0x55084eE0fEf03f14a305cd24286359A35D735151;
+
     // Pool Code Init Hashes
     bytes32 USV2_POOL_CODE_INIT_HASH =
         0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f;

foundry/test/TestUtils.sol

@@ -26,4 +26,26 @@ contract TestUtils is Test {
 
         revert("Test calldata not found");
     }
+
+    /// @notice Export the runtime bytecode of a deployed contract to a JSON file.
+    /// @dev
+    /// This function captures the runtime bytecode (including immutables) of the deployed
+    /// contract at `contractAddr` and writes it to a JSON file under `test/<name>.runtime.json`.
+    /// The resulting file is intended to be used for SDK testing in another repository and
+    /// should be copied there. It **should not** be committed in this repository.
+    /// @param contractAddr The address of the deployed contract to extract runtime bytecode from.
+    /// @param contractName The base filename for the exported JSON file.
+    function exportRuntimeBytecode(
+        address contractAddr,
+        string memory contractName
+    ) internal {
+        bytes memory runtime = contractAddr.code;
+        string memory hexCode = vm.toString(runtime);
+        string memory json =
+            string.concat('{"runtimeBytecode":"', hexCode, '"}');
+
+        string memory path =
+            string.concat("test/", contractName, ".runtime.json");
+        vm.writeFile(path, json);
+    }
 }

foundry/test/TychoRouterProtocolIntegration.t.sol

@@ -3,6 +3,7 @@ pragma solidity ^0.8.26;
 
 import "./TychoRouterTestSetup.sol";
 import "./protocols/UniswapV4Utils.sol";
+import "@src/executors/BebopExecutor.sol";
 
 contract TychoRouterTestProtocolIntegration is TychoRouterTestSetup {
     function testMultiProtocolIntegration() public {

foundry/test/TychoRouterSequentialSwap.t.sol

@@ -492,4 +492,95 @@ contract TychoRouterSequentialSwapTest is TychoRouterTestSetup {
         assertEq(balanceAfter - balanceBefore, 1949668893);
         assertEq(IERC20(WETH_ADDR).balanceOf(tychoRouterAddr), 0);
     }
+
+    function testSequentialSwapWithUnwrapIntegration() public {
+        // Performs a sequential swap from USDC to ETH through WBTC using USV2 pools and unwrapping in
+        // the end
+        deal(USDC_ADDR, ALICE, 3_000_000_000);
+        uint256 balanceBefore = ALICE.balance;
+
+        // Approve permit2
+        vm.startPrank(ALICE);
+        IERC20(USDC_ADDR).approve(PERMIT2_ADDRESS, type(uint256).max);
+        bytes memory callData =
+            loadCallDataFromFile("test_sequential_swap_strategy_encoder_unwrap");
+        (bool success,) = tychoRouterAddr.call(callData);
+
+        vm.stopPrank();
+
+        uint256 balanceAfter = ALICE.balance;
+
+        assertTrue(success, "Call Failed");
+        assertEq(balanceAfter - balanceBefore, 1404194006633772805);
+    }
+}
+
+contract TychoRouterSequentialSwapTestForBebop is TychoRouterTestSetup {
+    function getForkBlock() public pure override returns (uint256) {
+        return 23139046;
+    }
+
+    function testUSV3BebopIntegration() public {
+        // Performs a sequential swap from WETH to WBTC through USDC using USV3 and Bebop RFQ
+        //
+        //   WETH ──(USV3)──> USDC ───(Bebop RFQ)──> WBTC
+
+        // The Bebop order expects:
+        // - 2021750881 USDC input -> 1672307 WBTC output
+
+        uint256 amountIn = 1 ether;
+        uint256 expectedAmountOut = 1672307;
+        deal(WETH_ADDR, BOB, amountIn);
+        uint256 balanceBefore = IERC20(WBTC_ADDR).balanceOf(BOB);
+
+        vm.startPrank(BOB);
+        IERC20(WETH_ADDR).approve(tychoRouterAddr, type(uint256).max);
+        bytes memory callData = loadCallDataFromFile("test_uniswap_v3_bebop");
+        (bool success,) = tychoRouterAddr.call(callData);
+
+        vm.stopPrank();
+
+        uint256 balanceAfter = IERC20(WBTC_ADDR).balanceOf(BOB);
+
+        assertTrue(success, "Call Failed");
+        assertEq(balanceAfter - balanceBefore, expectedAmountOut);
+        assertEq(IERC20(WETH_ADDR).balanceOf(tychoRouterAddr), 0);
+    }
+}
+
+contract TychoRouterSequentialSwapTestForHashflow is TychoRouterTestSetup {
+    function getForkBlock() public pure override returns (uint256) {
+        return 23175437;
+    }
+
+    function testUSV3HashflowIntegration() public {
+        // Performs a sequential swap from WETH to WBTC through USDC using USV3 and Hashflow RFQ
+        //
+        //   WETH ──(USV3)──> USDC ───(Hashflow RFQ)──> WBTC
+
+        // The Uniswap pool outputs:
+        // - 1 weth -> 4322430557 USDC
+        // The Hashflow tradeRFQT call expects:
+        // - 4308094737 USDC input -> 3714751 WBTC output
+        // The difference in USDC (14335820) will stay in the TychoRouter contract
+
+        uint256 amountIn = 1 ether;
+        uint256 expectedAmountOut = 3714751;
+        deal(WETH_ADDR, ALICE, amountIn);
+        uint256 balanceBefore = IERC20(WBTC_ADDR).balanceOf(ALICE);
+
+        vm.startPrank(ALICE);
+        IERC20(WETH_ADDR).approve(tychoRouterAddr, type(uint256).max);
+        bytes memory callData = loadCallDataFromFile("test_uniswap_v3_hashflow");
+        (bool success,) = tychoRouterAddr.call(callData);
+
+        vm.stopPrank();
+
+        uint256 balanceAfter = IERC20(WBTC_ADDR).balanceOf(ALICE);
+
+        assertTrue(success, "Call Failed");
+        assertEq(balanceAfter - balanceBefore, expectedAmountOut);
+        assertEq(IERC20(WETH_ADDR).balanceOf(tychoRouterAddr), 0);
+        assertEq(IERC20(USDC_ADDR).balanceOf(tychoRouterAddr), 14335820);
+    }
 }

foundry/test/TychoRouterTestSetup.sol

@@ -4,8 +4,10 @@ pragma solidity ^0.8.26;
 // Executors
 import {BalancerV2Executor} from "../src/executors/BalancerV2Executor.sol";
 import {BalancerV3Executor} from "../src/executors/BalancerV3Executor.sol";
+import {BebopExecutor} from "../src/executors/BebopExecutor.sol";
 import {CurveExecutor} from "../src/executors/CurveExecutor.sol";
 import {EkuboExecutor} from "../src/executors/EkuboExecutor.sol";
+import {HashflowExecutor} from "../src/executors/HashflowExecutor.sol";
 import {MaverickV2Executor} from "../src/executors/MaverickV2Executor.sol";
 import {UniswapV2Executor} from "../src/executors/UniswapV2Executor.sol";
 import {
@@ -73,12 +75,14 @@ contract TychoRouterTestSetup is Constants, Permit2TestHelper, TestUtils {
     CurveExecutor public curveExecutor;
     MaverickV2Executor public maverickv2Executor;
     BalancerV3Executor public balancerV3Executor;
+    BebopExecutor public bebopExecutor;
+    HashflowExecutor public hashflowExecutor;
 
     function getForkBlock() public view virtual returns (uint256) {
         return 22082754;
     }
 
-    function setUp() public {
+    function setUp() public virtual {
         uint256 forkBlock = getForkBlock();
         vm.createSelectFork(vm.rpcUrl("mainnet"), forkBlock);
 
@@ -132,8 +136,11 @@ contract TychoRouterTestSetup is Constants, Permit2TestHelper, TestUtils {
         maverickv2Executor =
             new MaverickV2Executor(MAVERICK_V2_FACTORY, PERMIT2_ADDRESS);
         balancerV3Executor = new BalancerV3Executor(PERMIT2_ADDRESS);
+        bebopExecutor = new BebopExecutor(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+        hashflowExecutor =
+            new HashflowExecutor(HASHFLOW_ROUTER, PERMIT2_ADDRESS);
 
-        address[] memory executors = new address[](9);
+        address[] memory executors = new address[](11);
         executors[0] = address(usv2Executor);
         executors[1] = address(usv3Executor);
         executors[2] = address(pancakev3Executor);
@@ -143,6 +150,8 @@ contract TychoRouterTestSetup is Constants, Permit2TestHelper, TestUtils {
         executors[6] = address(curveExecutor);
         executors[7] = address(maverickv2Executor);
         executors[8] = address(balancerV3Executor);
+        executors[9] = address(bebopExecutor);
+        executors[10] = address(hashflowExecutor);
 
         return executors;
     }

foundry/test/protocols/BalancerV2.t.sol

@@ -134,4 +134,9 @@ contract BalancerV2ExecutorTest is Constants, TestUtils {
         assertGt(balanceAfter, balanceBefore);
         assertEq(balanceAfter - balanceBefore, amountOut);
     }
+
+    function testExportContract() public {
+        vm.skip(true);
+        exportRuntimeBytecode(address(balancerV2Exposed), "BalancerV2");
+    }
 }

foundry/test/protocols/Bebop.t.sol

@@ -0,0 +1,470 @@
+// SPDX-License-Identifier: BUSL-1.1
+pragma solidity ^0.8.26;
+
+import "../TestUtils.sol";
+import "../TychoRouterTestSetup.sol";
+import "@src/executors/BebopExecutor.sol";
+import {Constants} from "../Constants.sol";
+import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import {Permit2TestHelper} from "../Permit2TestHelper.sol";
+import {SafeERC20} from
+    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
+
+contract BebopExecutorExposed is BebopExecutor {
+    constructor(address _bebopSettlement, address _permit2)
+        BebopExecutor(_bebopSettlement, _permit2)
+    {}
+
+    function decodeData(bytes calldata data)
+        external
+        pure
+        returns (
+            address tokenIn,
+            address tokenOut,
+            TransferType transferType,
+            uint8 partialFillOffset,
+            uint256 originalFilledTakerAmount,
+            bool approvalNeeded,
+            address receiver,
+            bytes memory bebopCalldata
+        )
+    {
+        return _decodeData(data);
+    }
+}
+
+contract BebopExecutorTest is Constants, Permit2TestHelper, TestUtils {
+    using SafeERC20 for IERC20;
+
+    BebopExecutorExposed bebopExecutor;
+
+    IERC20 WETH = IERC20(WETH_ADDR);
+    IERC20 USDC = IERC20(USDC_ADDR);
+    IERC20 DAI = IERC20(DAI_ADDR);
+    IERC20 WBTC = IERC20(WBTC_ADDR);
+    IERC20 ONDO = IERC20(ONDO_ADDR);
+    IERC20 USDT = IERC20(USDT_ADDR);
+
+    function testDecodeData() public {
+        vm.createSelectFork(vm.rpcUrl("mainnet"), 22667985);
+        bebopExecutor =
+            new BebopExecutorExposed(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+
+        bytes memory bebopCalldata = abi.encodePacked(
+            bytes4(0x4dcebcba), // swapSingle selector
+            hex"00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000068470140"
+        );
+
+        uint256 originalAmountIn = 200000000; // 200 USDC
+        bytes memory params = abi.encodePacked(
+            USDC_ADDR,
+            ONDO_ADDR,
+            uint8(RestrictTransferFrom.TransferType.Transfer),
+            uint8(2),
+            originalAmountIn,
+            true,
+            address(123),
+            bebopCalldata
+        );
+
+        (
+            address tokenIn,
+            address tokenOut,
+            RestrictTransferFrom.TransferType transferType,
+            uint8 decodedPartialFillOffset,
+            uint256 decodedOriginalAmountIn,
+            bool decodedApprovalNeeded,
+            address decodedReceiver,
+            bytes memory decodedBebopCalldata
+        ) = bebopExecutor.decodeData(params);
+
+        assertEq(tokenIn, USDC_ADDR, "tokenIn mismatch");
+        assertEq(tokenOut, ONDO_ADDR, "tokenOut mismatch");
+        assertEq(
+            uint8(transferType),
+            uint8(RestrictTransferFrom.TransferType.Transfer),
+            "transferType mismatch"
+        );
+        assertEq(
+            keccak256(decodedBebopCalldata),
+            keccak256(bebopCalldata),
+            "bebopCalldata mismatch"
+        );
+        assertEq(decodedPartialFillOffset, 2, "partialFillOffset mismatch");
+        assertEq(
+            decodedOriginalAmountIn,
+            originalAmountIn,
+            "originalAmountIn mismatch"
+        );
+        assertTrue(decodedApprovalNeeded, "approvalNeeded should be true");
+        assertEq(decodedReceiver, address(123), "receiver mismatch");
+    }
+
+    // Single Order Tests
+    function testSingleOrder() public {
+        // 1 WETH -> WBTC
+        vm.createSelectFork(vm.rpcUrl("mainnet"), 23124275);
+
+        bebopExecutor =
+            new BebopExecutorExposed(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+
+        // Quote made manually using the BebopExecutor as the taker and receiver
+        bytes memory bebopCalldata =
+            hex"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";
+        address tokenIn = WETH_ADDR;
+        address tokenOut = WBTC_ADDR;
+        RestrictTransferFrom.TransferType transferType =
+            RestrictTransferFrom.TransferType.None;
+        uint8 partialFillOffset = 12;
+        uint256 amountIn = 1000000000000000000;
+        bool approvalNeeded = true;
+        uint256 expectedAmountOut = 3617660;
+
+        deal(tokenIn, address(bebopExecutor), amountIn);
+
+        bytes memory params = abi.encodePacked(
+            tokenIn,
+            tokenOut,
+            transferType,
+            partialFillOffset,
+            amountIn,
+            approvalNeeded,
+            address(bebopExecutor),
+            bebopCalldata
+        );
+
+        uint256 initialTokenOutBalance =
+            IERC20(tokenOut).balanceOf(address(bebopExecutor));
+
+        uint256 amountOut = bebopExecutor.swap(amountIn, params);
+
+        assertEq(amountOut, expectedAmountOut, "Incorrect amount out");
+        assertEq(
+            IERC20(tokenOut).balanceOf(address(bebopExecutor))
+                - initialTokenOutBalance,
+            expectedAmountOut,
+            "WBTC should be at receiver"
+        );
+        assertEq(
+            IERC20(tokenIn).balanceOf(address(bebopExecutor)),
+            0,
+            "WETH left in executor"
+        );
+    }
+
+    function testSingleOrderSellingETH() public {
+        // 1 WETH -> WBTC
+        vm.createSelectFork(vm.rpcUrl("mainnet"), 23124275);
+
+        bebopExecutor =
+            new BebopExecutorExposed(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+
+        // Quote made manually using the BebopExecutor as the taker and receiver
+        bytes memory bebopCalldata =
+            hex"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";
+        address tokenIn = address(0);
+        address tokenOut = WBTC_ADDR;
+        RestrictTransferFrom.TransferType transferType =
+            RestrictTransferFrom.TransferType.None;
+        uint8 partialFillOffset = 12;
+        uint256 amountIn = 1000000000000000000;
+        bool approvalNeeded = false;
+        uint256 expectedAmountOut = 3839649;
+
+        vm.deal(address(bebopExecutor), amountIn);
+
+        bytes memory params = abi.encodePacked(
+            tokenIn,
+            tokenOut,
+            transferType,
+            partialFillOffset,
+            amountIn,
+            approvalNeeded,
+            address(bebopExecutor),
+            bebopCalldata
+        );
+
+        uint256 initialTokenOutBalance =
+            IERC20(tokenOut).balanceOf(address(bebopExecutor));
+
+        uint256 amountOut = bebopExecutor.swap(amountIn, params);
+
+        assertEq(amountOut, expectedAmountOut, "Incorrect amount out");
+        assertEq(
+            IERC20(tokenOut).balanceOf(address(bebopExecutor))
+                - initialTokenOutBalance,
+            expectedAmountOut,
+            "WBTC should be at receiver"
+        );
+        assertEq(address(bebopExecutor).balance, 0, "ETH left in executor");
+    }
+
+    function testSingleOrder_PartialFill() public {
+        // 0.5 WETH -> WBTC with a quote for 1 WETH
+        vm.createSelectFork(vm.rpcUrl("mainnet"), 23124275);
+
+        bebopExecutor =
+            new BebopExecutorExposed(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+
+        // Quote made manually using the BebopExecutor as the taker and receiver (the same as testSingleOrder)
+        bytes memory bebopCalldata =
+            hex"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";
+        address tokenIn = WETH_ADDR;
+        address tokenOut = WBTC_ADDR;
+        RestrictTransferFrom.TransferType transferType =
+            RestrictTransferFrom.TransferType.None;
+        uint8 partialFillOffset = 12;
+        // filling only half of the quote
+        uint256 amountIn = 1000000000000000000 / 2;
+        bool approvalNeeded = true;
+        uint256 expectedAmountOut = 3617660 / 2;
+
+        deal(tokenIn, address(bebopExecutor), amountIn);
+
+        bytes memory params = abi.encodePacked(
+            tokenIn,
+            tokenOut,
+            transferType,
+            partialFillOffset,
+            amountIn * 2, // this is the original amount in
+            approvalNeeded,
+            address(bebopExecutor),
+            bebopCalldata
+        );
+
+        uint256 initialTokenOutBalance =
+            IERC20(tokenOut).balanceOf(address(bebopExecutor));
+
+        uint256 amountOut = bebopExecutor.swap(amountIn, params);
+
+        assertEq(amountOut, expectedAmountOut, "Incorrect partial amount out");
+        assertEq(
+            IERC20(tokenOut).balanceOf(address(bebopExecutor))
+                - initialTokenOutBalance,
+            expectedAmountOut,
+            "WETH should be at receiver"
+        );
+        assertEq(
+            IERC20(tokenIn).balanceOf(address(bebopExecutor)),
+            0,
+            "WBTC left in executor"
+        );
+    }
+
+    // Aggregate Order Tests
+    function testAggregateOrder() public {
+        // 20k USDC -> ONDO
+        vm.createSelectFork(vm.rpcUrl("mainnet"), 23126278);
+        bebopExecutor =
+            new BebopExecutorExposed(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+
+        // Quote made manually using the BebopExecutor as the taker and receiver
+        bytes memory bebopCalldata =
+            hex"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";
+        address tokenIn = USDC_ADDR;
+        address tokenOut = ONDO_ADDR;
+        RestrictTransferFrom.TransferType transferType =
+            RestrictTransferFrom.TransferType.None;
+        uint8 partialFillOffset = 2;
+        // filling only half of the quote
+        uint256 amountIn = 20000000000;
+        bool approvalNeeded = true;
+        // maker amounts from quote
+        uint256 expectedAmountOut =
+            (8999445165322964385268 + 9912843438638420000000);
+
+        deal(tokenIn, address(bebopExecutor), amountIn);
+
+        bytes memory params = abi.encodePacked(
+            tokenIn,
+            tokenOut,
+            transferType,
+            partialFillOffset,
+            amountIn,
+            approvalNeeded,
+            address(bebopExecutor),
+            bebopCalldata
+        );
+
+        uint256 initialTokenOutBalance =
+            IERC20(tokenOut).balanceOf(address(bebopExecutor));
+
+        uint256 amountOut = bebopExecutor.swap(amountIn, params);
+
+        assertEq(amountOut, expectedAmountOut, "Incorrect amount out");
+
+        assertEq(
+            IERC20(tokenOut).balanceOf(address(bebopExecutor))
+                - initialTokenOutBalance,
+            expectedAmountOut,
+            "ONDO should be at receiver"
+        );
+        assertEq(
+            IERC20(tokenIn).balanceOf(address(bebopExecutor)),
+            0,
+            "USDC left in executor"
+        );
+    }
+
+    function testAggregateOrder_PartialFill() public {
+        // 10k USDC -> ONDO with a quote for 20k USDC
+        vm.createSelectFork(vm.rpcUrl("mainnet"), 23126278);
+        bebopExecutor =
+            new BebopExecutorExposed(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+
+        // Quote made manually using the BebopExecutor as the taker and receiver
+        bytes memory bebopCalldata =
+            hex"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";
+        address tokenIn = USDC_ADDR;
+        address tokenOut = ONDO_ADDR;
+        RestrictTransferFrom.TransferType transferType =
+            RestrictTransferFrom.TransferType.None;
+        uint8 partialFillOffset = 2;
+        // filling only half of the quote
+        uint256 amountIn = 20000000000 / 2;
+        bool approvalNeeded = true;
+        // maker amounts from quote
+        uint256 expectedAmountOut =
+            (8999445165322964385268 + 9912843438638420000000) / 2;
+
+        deal(tokenIn, address(bebopExecutor), amountIn);
+
+        bytes memory params = abi.encodePacked(
+            tokenIn,
+            tokenOut,
+            transferType,
+            partialFillOffset,
+            amountIn * 2, // this is the original amount from the quote
+            approvalNeeded,
+            address(bebopExecutor),
+            bebopCalldata
+        );
+
+        uint256 initialTokenOutBalance =
+            IERC20(tokenOut).balanceOf(address(bebopExecutor));
+
+        uint256 amountOut = bebopExecutor.swap(amountIn, params);
+
+        assertEq(amountOut, expectedAmountOut, "Incorrect amount out");
+
+        assertEq(
+            IERC20(tokenOut).balanceOf(address(bebopExecutor))
+                - initialTokenOutBalance,
+            expectedAmountOut,
+            "ONDO should be at receiver"
+        );
+        assertEq(
+            IERC20(tokenIn).balanceOf(address(bebopExecutor)),
+            1, // because of integer division, there is 1 USDC left in the executor
+            "USDC left in executor"
+        );
+    }
+
+    function testInvalidDataLength() public {
+        vm.createSelectFork(vm.rpcUrl("mainnet"), 22667985);
+        bebopExecutor =
+            new BebopExecutorExposed(BEBOP_SETTLEMENT, PERMIT2_ADDRESS);
+
+        // Create a mock bebop calldata
+        bytes memory bebopCalldata = hex"47fb5891" // swapSingle selector
+            hex"1234567890abcdef"; // some mock data
+
+        // Create params with correct length first
+        uint256 originalAmountIn = 1e18;
+        bytes memory validParams = abi.encodePacked(
+            WETH_ADDR,
+            USDC_ADDR,
+            uint8(RestrictTransferFrom.TransferType.Transfer),
+            uint8(2),
+            originalAmountIn,
+            true,
+            address(bebopExecutor),
+            bebopCalldata
+        );
+
+        // Verify valid params work
+        bebopExecutor.decodeData(validParams);
+
+        // In the new format, adding extra bytes at the end doesn't fail
+        // because bebopCalldata is variable length at the end
+        // So test with extra bytes should not revert
+        bytes memory paramsWithExtra = abi.encodePacked(validParams, hex"ff");
+        // This should work as the extra byte becomes part of bebopCalldata
+        bebopExecutor.decodeData(paramsWithExtra);
+
+        // Try with insufficient data, should fail
+        bytes memory tooShortParams = abi.encodePacked(
+            WETH_ADDR,
+            USDC_ADDR,
+            uint8(RestrictTransferFrom.TransferType.Transfer)
+        );
+        // Missing rest of the data
+
+        vm.expectRevert(BebopExecutor.BebopExecutor__InvalidDataLength.selector);
+        bebopExecutor.decodeData(tooShortParams);
+    }
+}
+
+contract TychoRouterForBebopTest is TychoRouterTestSetup {
+    // Override the fork block for Bebop tests
+    function getForkBlock() public pure override returns (uint256) {
+        return 22667986;
+    }
+
+    function testSingleBebopIntegration() public {
+        // The calldata swaps 200 USDC for ONDO
+        address user = 0xd2068e04Cf586f76EEcE7BA5bEB779D7bB1474A1;
+        deal(USDC_ADDR, user, 200000000); // 200 USDC
+        uint256 expAmountOut = 194477331556159832309; // Expected ONDO amount from quote
+
+        uint256 ondoBefore = IERC20(ONDO_ADDR).balanceOf(user);
+        vm.startPrank(user);
+        IERC20(USDC_ADDR).approve(tychoRouterAddr, type(uint256).max);
+
+        bytes memory callData =
+            loadCallDataFromFile("test_single_encoding_strategy_bebop");
+
+        (bool success,) = tychoRouterAddr.call(callData);
+
+        assertTrue(success, "Call Failed");
+
+        uint256 ondoReceived = IERC20(ONDO_ADDR).balanceOf(user) - ondoBefore;
+        assertEq(ondoReceived, expAmountOut);
+        assertEq(
+            IERC20(USDC_ADDR).balanceOf(tychoRouterAddr),
+            0,
+            "USDC left in router"
+        );
+
+        vm.stopPrank();
+    }
+
+    function testBebopAggregateIntegration() public {
+        // The calldata swaps 20k USDC for ONDO using multiple market makers
+        address user = 0xd2068e04Cf586f76EEcE7BA5bEB779D7bB1474A1;
+        deal(USDC_ADDR, user, 20000000000); // 20k USDC
+        uint256 expAmountOut = 18699321819466078474202; // Expected ONDO amount from quote
+
+        uint256 ondoBefore = IERC20(ONDO_ADDR).balanceOf(user);
+        vm.startPrank(user);
+        IERC20(USDC_ADDR).approve(tychoRouterAddr, type(uint256).max);
+
+        bytes memory callData = loadCallDataFromFile(
+            "test_single_encoding_strategy_bebop_aggregate"
+        );
+
+        (bool success,) = tychoRouterAddr.call(callData);
+
+        assertTrue(success, "Call Failed");
+
+        uint256 ondoReceived = IERC20(ONDO_ADDR).balanceOf(user) - ondoBefore;
+        assertEq(ondoReceived, expAmountOut);
+        assertEq(
+            IERC20(USDC_ADDR).balanceOf(tychoRouterAddr),
+            0,
+            "USDC left in router"
+        );
+
+        vm.stopPrank();
+    }
+}

foundry/test/protocols/Hashflow.t.sol

@@ -0,0 +1,316 @@
+// SPDX-License-Identifier: BUSL-1.1
+pragma solidity ^0.8.26;
+
+import "../TychoRouterTestSetup.sol";
+import "@src/executors/HashflowExecutor.sol";
+import "forge-std/Test.sol";
+import {Constants} from "../Constants.sol";
+
+contract HashflowUtils is Test {
+    constructor() {}
+
+    function encodeRfqtQuote(
+        IHashflowRouter.RFQTQuote memory quote,
+        bool approvalNeeded,
+        RestrictTransferFrom.TransferType transferType
+    ) internal pure returns (bytes memory) {
+        return abi.encodePacked(
+            uint8(transferType), // transferType (1 byte)
+            approvalNeeded, // needsApproval (1 byte)
+            quote.pool, // pool (20 bytes)
+            quote.externalAccount, // externalAccount (20 bytes)
+            quote.trader, // trader (20 bytes)
+            quote.baseToken, // baseToken (20 bytes)
+            quote.quoteToken, // quoteToken (20 bytes)
+            quote.baseTokenAmount, // baseTokenAmount (32 bytes)
+            quote.quoteTokenAmount, // quoteTokenAmount (32 bytes)
+            quote.quoteExpiry, // quoteExpiry (32 bytes)
+            quote.nonce, // nonce (32 bytes)
+            quote.txid, // txid (32 bytes)
+            quote.signature // signature data
+        );
+    }
+
+    function encodeRfqtQuoteWithDefaults(IHashflowRouter.RFQTQuote memory quote)
+        internal
+        pure
+        returns (bytes memory)
+    {
+        return
+            encodeRfqtQuote(quote, true, RestrictTransferFrom.TransferType.None);
+    }
+}
+
+contract HashflowExecutorECR20Test is Constants, HashflowUtils {
+    using SafeERC20 for IERC20;
+
+    HashflowExecutorExposed executor;
+    uint256 forkBlock;
+
+    IERC20 WETH = IERC20(WETH_ADDR);
+    IERC20 USDC = IERC20(USDC_ADDR);
+
+    function setUp() public {
+        forkBlock = 23188416; // Using expiry date: 1755766775, ECR20
+        vm.createSelectFork("mainnet", forkBlock);
+        executor = new HashflowExecutorExposed(HASHFLOW_ROUTER, PERMIT2_ADDRESS);
+    }
+
+    function testDecodeParams() public view {
+        IHashflowRouter.RFQTQuote memory expected_quote = rfqtQuote();
+        bytes memory encodedQuote = encodeRfqtQuoteWithDefaults(expected_quote);
+        (
+            IHashflowRouter.RFQTQuote memory quote,
+            bool approvalNeeded,
+            RestrictTransferFrom.TransferType transferType
+        ) = executor.decodeData(encodedQuote);
+
+        assertEq(quote.pool, expected_quote.pool, "pool mismatch");
+        assertEq(
+            quote.externalAccount,
+            expected_quote.externalAccount,
+            "externalAccount mismatch"
+        );
+        assertEq(quote.trader, expected_quote.trader, "trader mismatch");
+        assertEq(
+            quote.effectiveTrader,
+            expected_quote.effectiveTrader,
+            "effectiveTrader mismatch"
+        );
+        assertEq(
+            quote.baseToken, expected_quote.baseToken, "baseToken mismatch"
+        );
+        assertEq(
+            quote.quoteToken, expected_quote.quoteToken, "quoteToken mismatch"
+        );
+        assertEq(
+            quote.effectiveBaseTokenAmount,
+            expected_quote.effectiveBaseTokenAmount,
+            "effectiveBaseTokenAmount mismatch"
+        );
+        assertEq(
+            quote.baseTokenAmount,
+            expected_quote.baseTokenAmount,
+            "baseTokenAmount mismatch"
+        );
+        assertEq(
+            quote.quoteTokenAmount,
+            expected_quote.quoteTokenAmount,
+            "quoteTokenAmount mismatch"
+        );
+        assertEq(
+            quote.quoteExpiry,
+            expected_quote.quoteExpiry,
+            "quoteExpiry mismatch"
+        );
+        assertEq(quote.nonce, expected_quote.nonce, "nonce mismatch");
+        assertEq(quote.txid, expected_quote.txid, "txid mismatch");
+        assertEq(
+            quote.signature, expected_quote.signature, "signature mismatch"
+        );
+        assertEq(approvalNeeded, true, "Approval flag mismatch");
+        assertEq(
+            uint8(transferType),
+            uint8(RestrictTransferFrom.TransferType.None),
+            "Transfer type mismatch"
+        );
+    }
+
+    function testDecodeParamsInvalidDataLength() public {
+        bytes memory invalidData = new bytes(10);
+        vm.expectRevert(HashflowExecutor__InvalidDataLength.selector);
+        executor.decodeData(invalidData);
+    }
+
+    function testSwapNoSlippage() public {
+        address trader = address(ALICE);
+        IHashflowRouter.RFQTQuote memory quote = rfqtQuote();
+        uint256 amountIn = quote.baseTokenAmount;
+        bytes memory encodedQuote = encodeRfqtQuoteWithDefaults(quote);
+
+        deal(WETH_ADDR, address(executor), amountIn);
+        uint256 balanceBefore = USDC.balanceOf(trader);
+
+        vm.prank(trader);
+        uint256 amountOut = executor.swap(amountIn, encodedQuote);
+
+        uint256 balanceAfter = USDC.balanceOf(trader);
+        assertGt(balanceAfter, balanceBefore);
+        assertEq(balanceAfter - balanceBefore, amountOut);
+        assertEq(amountOut, quote.quoteTokenAmount);
+    }
+
+    function testSwapRouterAmountUnderQuoteAmount() public {
+        address trader = address(ALICE);
+        IHashflowRouter.RFQTQuote memory quote = rfqtQuote();
+        uint256 amountIn = quote.baseTokenAmount - 1;
+        bytes memory encodedQuote = encodeRfqtQuoteWithDefaults(quote);
+
+        deal(WETH_ADDR, address(executor), amountIn);
+        uint256 balanceBefore = USDC.balanceOf(trader);
+
+        vm.prank(trader);
+        uint256 amountOut = executor.swap(amountIn, encodedQuote);
+
+        uint256 balanceAfter = USDC.balanceOf(trader);
+        assertGt(balanceAfter, balanceBefore);
+        assertEq(balanceAfter - balanceBefore, amountOut);
+        assertLt(amountOut, quote.quoteTokenAmount);
+    }
+
+    function testSwapRouterAmountOverQuoteAmount() public {
+        address trader = address(ALICE);
+        IHashflowRouter.RFQTQuote memory quote = rfqtQuote();
+        uint256 amountIn = quote.baseTokenAmount + 1;
+        bytes memory encodedQuote = encodeRfqtQuoteWithDefaults(quote);
+
+        deal(WETH_ADDR, address(executor), amountIn);
+        uint256 balanceBefore = USDC.balanceOf(trader);
+
+        vm.prank(trader);
+        uint256 amountOut = executor.swap(amountIn, encodedQuote);
+
+        uint256 balanceAfter = USDC.balanceOf(trader);
+        assertGt(balanceAfter, balanceBefore);
+        assertEq(balanceAfter - balanceBefore, amountOut);
+        assertEq(amountOut, quote.quoteTokenAmount);
+    }
+
+    function rfqtQuote()
+        internal
+        view
+        returns (IHashflowRouter.RFQTQuote memory)
+    {
+        return IHashflowRouter.RFQTQuote({
+            pool: address(0x5d8853028fbF6a2da43c7A828cc5f691E9456B44),
+            externalAccount: address(0x9bA0CF1588E1DFA905eC948F7FE5104dD40EDa31),
+            trader: address(ALICE),
+            effectiveTrader: address(ALICE),
+            baseToken: WETH_ADDR,
+            quoteToken: USDC_ADDR,
+            effectiveBaseTokenAmount: 0,
+            baseTokenAmount: 1000000000000000000,
+            quoteTokenAmount: 4286117034,
+            quoteExpiry: 1755766775,
+            nonce: 1755766744988,
+            txid: bytes32(
+                uint256(
+                    0x12500006400064000186078c183380ffffffffffffff00296d737ff6ae950000
+                )
+            ),
+            signature: hex"649d31cd74f1b11b4a3b32bd38c2525d78ce8f23bc2eaf7700899c3a396d3a137c861737dc780fa154699eafb3108a34cbb2d4e31a6f0623c169cc19e0fa296a1c"
+        });
+    }
+}
+
+contract HashflowExecutorNativeTest is Constants, HashflowUtils {
+    using SafeERC20 for IERC20;
+
+    HashflowExecutorExposed executor;
+    uint256 forkBlock;
+
+    IERC20 WETH = IERC20(WETH_ADDR);
+    IERC20 USDC = IERC20(USDC_ADDR);
+
+    function setUp() public {
+        forkBlock = 23188504; // Using expiry date: 1755767859, Native
+        vm.createSelectFork("mainnet", forkBlock);
+        executor = new HashflowExecutorExposed(HASHFLOW_ROUTER, PERMIT2_ADDRESS);
+    }
+
+    function testSwapNoSlippage() public {
+        address trader = address(ALICE);
+        IHashflowRouter.RFQTQuote memory quote = rfqtQuote();
+        uint256 amountIn = quote.baseTokenAmount;
+        bytes memory encodedQuote = encodeRfqtQuoteWithDefaults(quote);
+
+        vm.deal(address(executor), amountIn);
+        uint256 balanceBefore = USDC.balanceOf(trader);
+
+        vm.prank(trader);
+        uint256 amountOut = executor.swap(amountIn, encodedQuote);
+
+        uint256 balanceAfter = USDC.balanceOf(trader);
+        assertGt(balanceAfter, balanceBefore);
+        assertEq(balanceAfter - balanceBefore, amountOut);
+        assertEq(amountOut, quote.quoteTokenAmount);
+    }
+
+    function rfqtQuote()
+        internal
+        view
+        returns (IHashflowRouter.RFQTQuote memory)
+    {
+        return IHashflowRouter.RFQTQuote({
+            pool: address(0x713DC4Df480235dBe2fB766E7120Cbd4041Dcb58),
+            externalAccount: address(0x111BB8c3542F2B92fb41B8d913c01D3788431111),
+            trader: address(ALICE),
+            effectiveTrader: address(ALICE),
+            baseToken: address(0x0000000000000000000000000000000000000000),
+            quoteToken: USDC_ADDR,
+            effectiveBaseTokenAmount: 0,
+            baseTokenAmount: 10000000000000000,
+            quoteTokenAmount: 42586008,
+            quoteExpiry: 1755767859,
+            nonce: 1755767819299,
+            txid: bytes32(
+                uint256(
+                    0x1250000640006400018380fd594810ffffffffffffff00296d83e467cddd0000
+                )
+            ),
+            signature: hex"63c1c9c7d6902d1d4d2ae82777015433ef08366dde1c579a8c4cbc01059166064246f61f15b2cb130be8f2b28ea40d2c3586ef0133647fefa30003e70ffbd6131b"
+        });
+    }
+}
+
+contract HashflowExecutorExposed is HashflowExecutor {
+    constructor(address _hashflowRouter, address _permit2)
+        HashflowExecutor(_hashflowRouter, _permit2)
+    {}
+
+    function decodeData(bytes calldata data)
+        external
+        pure
+        returns (
+            IHashflowRouter.RFQTQuote memory quote,
+            bool approvalNeeded,
+            TransferType transferType
+        )
+    {
+        return _decodeData(data);
+    }
+}
+
+contract TychoRouterSingleSwapTestForHashflow is TychoRouterTestSetup {
+    function getForkBlock() public pure override returns (uint256) {
+        return 23175437;
+    }
+
+    function testHashflowIntegration() public {
+        // Performs a swap from USDC to WBTC using Hashflow RFQ
+        //
+        //   USDC ───(Hashflow RFQ)──> WBTC
+
+        // The Hashflow order expects:
+        // - 4308094737 USDC input -> 3714751 WBTC output
+
+        uint256 amountIn = 4308094737;
+        uint256 expectedAmountOut = 3714751;
+        deal(USDC_ADDR, ALICE, amountIn);
+        uint256 balanceBefore = IERC20(WBTC_ADDR).balanceOf(ALICE);
+
+        vm.startPrank(ALICE);
+        IERC20(USDC_ADDR).approve(tychoRouterAddr, type(uint256).max);
+        bytes memory callData =
+            loadCallDataFromFile("test_single_encoding_strategy_hashflow");
+        (bool success,) = tychoRouterAddr.call(callData);
+
+        vm.stopPrank();
+
+        uint256 balanceAfter = IERC20(WBTC_ADDR).balanceOf(ALICE);
+
+        assertTrue(success, "Call Failed");
+        assertEq(balanceAfter - balanceBefore, expectedAmountOut);
+        assertEq(IERC20(WETH_ADDR).balanceOf(tychoRouterAddr), 0);
+    }
+}

src/encoding/errors.rs

@@ -1,6 +1,7 @@
 use std::{io, str::Utf8Error};
 
 use thiserror::Error;
+use tycho_common::simulation::errors::SimulationError;
 
 /// Represents the outer-level, user-facing errors of the tycho-execution encoding package.
 ///
@@ -41,3 +42,15 @@ impl From<Utf8Error> for EncodingError {
         EncodingError::FatalError(err.to_string())
     }
 }
+
+impl From<SimulationError> for EncodingError {
+    fn from(err: SimulationError) -> Self {
+        match err {
+            SimulationError::FatalError(err_msg) => EncodingError::FatalError(err_msg),
+            SimulationError::InvalidInput(err_msg, ..) => EncodingError::InvalidInput(err_msg),
+            SimulationError::RecoverableError(error_msg) => {
+                EncodingError::RecoverableError(error_msg)
+            }
+        }
+    }
+}

src/encoding/evm/approvals/permit2.rs

@@ -31,10 +31,6 @@ pub struct Permit2 {
     address: Address,
     client: EVMProvider,
     runtime_handle: Handle,
-    // Store the runtime to prevent it from being dropped before use.
-    // This is required since tycho-execution does not have a pre-existing runtime.
-    // However, if the library is used in a context where a runtime already exists, it is not
-    // necessary to store it.
     #[allow(dead_code)]
     runtime: Option<Arc<Runtime>>,
 }

src/encoding/evm/approvals/protocol_approvals_manager.rs

@@ -23,10 +23,6 @@ use crate::encoding::{
 pub struct ProtocolApprovalsManager {
     client: EVMProvider,
     runtime_handle: Handle,
-    // Store the runtime to prevent it from being dropped before use.
-    // This is required since tycho-execution does not have a pre-existing runtime.
-    // However, if the library is used in a context where a runtime already exists, it is not
-    // necessary to store it.
     #[allow(dead_code)]
     runtime: Option<Arc<Runtime>>,
 }

src/encoding/evm/group_swaps.rs

@@ -12,15 +12,15 @@ use crate::encoding::{evm::constants::GROUPABLE_PROTOCOLS, models::Swap};
 /// * `swaps`: Vec<Swap>, the sequence of swaps to be executed as a group
 /// * `split`: f64, the split percentage of the first swap in the group
 #[derive(Clone, Debug)]
-pub struct SwapGroup<'a> {
+pub struct SwapGroup {
     pub token_in: Bytes,
     pub token_out: Bytes,
     pub protocol_system: String,
-    pub swaps: Vec<Swap<'a>>,
+    pub swaps: Vec<Swap>,
     pub split: f64,
 }
 
-impl<'a> PartialEq for SwapGroup<'a> {
+impl PartialEq for SwapGroup {
     fn eq(&self, other: &Self) -> bool {
         self.token_in == other.token_in &&
             self.token_out == other.token_out &&
@@ -34,7 +34,7 @@ impl<'a> PartialEq for SwapGroup<'a> {
 ///
 /// An example where this applies is the case of USV4, which uses a PoolManager contract
 /// to save token transfers on consecutive swaps.
-pub fn group_swaps<'a>(swaps: &'a Vec<Swap<'a>>) -> Vec<SwapGroup<'a>> {
+pub fn group_swaps(swaps: &Vec<Swap>) -> Vec<SwapGroup> {
     let mut grouped_swaps: Vec<SwapGroup> = Vec::new();
     let mut current_group: Option<SwapGroup> = None;
     let mut last_swap_protocol = "".to_string();
@@ -87,7 +87,7 @@ mod tests {
     use tycho_common::{models::protocol::ProtocolComponent, Bytes};
 
     use super::*;
-    use crate::encoding::models::Swap;
+    use crate::encoding::models::SwapBuilder;
 
     fn weth() -> Bytes {
         Bytes::from(hex!("c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2").to_vec())
@@ -105,41 +105,26 @@ mod tests {
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
 
-        let swap_weth_wbtc = Swap {
+        let swap_weth_wbtc = SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-                protocol_system: "uniswap_v4_hooks".to_string(),
+            weth.clone(),
-                ..Default::default()
+            wbtc.clone(),
-            },
+        )
-            token_in: weth.clone(),
+        .build();
-            token_out: wbtc.clone(),
+
-            // This represents the remaining 50%, but to avoid any rounding errors we set this to
+        let swap_wbtc_usdc = SwapBuilder::new(
-            // 0 to signify "the remainder of the WETH value". It should still be very close to 50%
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-            split: 0f64,
+            wbtc.clone(),
-            user_data: None,
+            usdc.clone(),
-            protocol_state: None,
+        )
-        };
+        .build();
-        let swap_wbtc_usdc = Swap {
+
-            component: ProtocolComponent {
+        let swap_usdc_dai = SwapBuilder::new(
-                protocol_system: "uniswap_v4_hooks".to_string(),
+            ProtocolComponent { protocol_system: "uniswap_v2".to_string(), ..Default::default() },
-                ..Default::default()
+            usdc.clone(),
-            },
+            dai.clone(),
-            token_in: wbtc.clone(),
+        )
-            token_out: usdc.clone(),
+        .build();
-            split: 0f64,
-            user_data: None,
-            protocol_state: None,
-        };
-        let swap_usdc_dai = Swap {
-            component: ProtocolComponent {
-                protocol_system: "uniswap_v2".to_string(),
-                ..Default::default()
-            },
-            token_in: usdc.clone(),
-            token_out: dai.clone(),
-            split: 0f64,
-            user_data: None,
-            protocol_state: None,
-        };
         let swaps = vec![swap_weth_wbtc.clone(), swap_wbtc_usdc.clone(), swap_usdc_dai.clone()];
         let grouped_swaps = group_swaps(&swaps);
 
@@ -179,52 +164,34 @@ mod tests {
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
 
-        let swap_wbtc_weth = Swap {
+        let swap_wbtc_weth = SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-                protocol_system: "uniswap_v4_hooks".to_string(),
+            wbtc.clone(),
-                ..Default::default()
+            weth.clone(),
-            },
+        )
-            token_in: wbtc.clone(),
+        .build();
-            token_out: weth.clone(),
+        let swap_weth_usdc = SwapBuilder::new(
-            split: 0f64,
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-            user_data: None,
+            weth.clone(),
-            protocol_state: None,
+            usdc.clone(),
-        };
+        )
-        let swap_weth_usdc = Swap {
+        .split(0.5f64)
-            component: ProtocolComponent {
+        .build();
-                protocol_system: "uniswap_v4_hooks".to_string(),
+        let swap_weth_dai = SwapBuilder::new(
-                ..Default::default()
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-            },
+            weth.clone(),
-            token_in: weth.clone(),
+            dai.clone(),
-            token_out: usdc.clone(),
+        )
-            split: 0.5f64,
+        .build();
-            user_data: None,
+        // Split 0 represents the remaining 50%, but to avoid any rounding errors we set this to
-            protocol_state: None,
-        };
-        let swap_weth_dai = Swap {
-            component: ProtocolComponent {
-                protocol_system: "uniswap_v4_hooks".to_string(),
-                ..Default::default()
-            },
-            token_in: weth.clone(),
-            token_out: dai.clone(),
-            // This represents the remaining 50%, but to avoid any rounding errors we set this to
         // 0 to signify "the remainder of the WETH value". It should still be very close to 50%
-            split: 0f64,
+
-            user_data: None,
+        let swap_dai_usdc = SwapBuilder::new(
-            protocol_state: None,
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-        };
+            dai.clone(),
-        let swap_dai_usdc = Swap {
+            usdc.clone(),
-            component: ProtocolComponent {
+        )
-                protocol_system: "uniswap_v4_hooks".to_string(),
+        .build();
-                ..Default::default()
-            },
-            token_in: dai.clone(),
-            token_out: usdc.clone(),
-            split: 0f64,
-            user_data: None,
-            protocol_state: None,
-        };
         let swaps = vec![
             swap_wbtc_weth.clone(),
             swap_weth_usdc.clone(),
@@ -275,52 +242,38 @@ mod tests {
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
 
-        let swap_weth_wbtc = Swap {
+        let swap_weth_wbtc = SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 protocol_system: "vm:balancer_v3".to_string(),
                 ..Default::default()
             },
-            token_in: weth.clone(),
+            weth.clone(),
-            token_out: wbtc.clone(),
+            wbtc.clone(),
-            split: 0.5f64,
+        )
-            user_data: None,
+        .split(0.5f64)
-            protocol_state: None,
+        .build();
-        };
+
-        let swap_wbtc_usdc = Swap {
+        let swap_wbtc_usdc = SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 protocol_system: "vm:balancer_v3".to_string(),
                 ..Default::default()
             },
-            token_in: wbtc.clone(),
+            wbtc.clone(),
-            token_out: usdc.clone(),
+            usdc.clone(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build();
-            protocol_state: None,
+        let swap_weth_dai = SwapBuilder::new(
-        };
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-        let swap_weth_dai = Swap {
+            weth.clone(),
-            component: ProtocolComponent {
+            dai.clone(),
-                protocol_system: "uniswap_v4_hooks".to_string(),
+        )
-                ..Default::default()
+        .build();
-            },
+        let swap_dai_usdc = SwapBuilder::new(
-            token_in: weth.clone(),
+            ProtocolComponent { protocol_system: "uniswap_v4_hooks".to_string(), ..Default::default() },
-            token_out: dai.clone(),
+            dai.clone(),
-            // This represents the remaining 50%, but to avoid any rounding errors we set this to
+            usdc.clone(),
-            // 0 to signify "the remainder of the WETH value". It should still be very close to 50%
+        )
-            split: 0f64,
+        .build();
-            user_data: None,
-            protocol_state: None,
-        };
-        let swap_dai_usdc = Swap {
-            component: ProtocolComponent {
-                protocol_system: "uniswap_v4_hooks".to_string(),
-                ..Default::default()
-            },
-            token_in: dai.clone(),
-            token_out: usdc.clone(),
-            split: 0f64,
-            user_data: None,
-            protocol_state: None,
-        };
 
         let swaps = vec![
             swap_weth_wbtc.clone(),

src/encoding/evm/mod.rs

@@ -5,5 +5,7 @@ mod encoding_utils;
 mod group_swaps;
 pub mod strategy_encoder;
 mod swap_encoder;
+#[cfg(feature = "test-utils")]
+pub mod testing_utils;
 pub mod tycho_encoders;
 pub mod utils;

src/encoding/evm/strategy_encoder/strategy_encoders.rs

@@ -237,10 +237,11 @@ impl StrategyEncoder for SequentialSwapStrategyEncoder {
 
         let grouped_swaps = group_swaps(&solution.swaps);
 
-        let mut wrap = false;
+        let (mut wrap, mut unwrap) = (false, false);
         if let Some(action) = &solution.native_action {
-            if action == &NativeAction::Wrap {
+            match *action {
-                wrap = true
+                NativeAction::Wrap => wrap = true,
+                NativeAction::Unwrap => unwrap = true,
             }
         }
 
@@ -260,7 +261,7 @@ impl StrategyEncoder for SequentialSwapStrategyEncoder {
             let next_swap = grouped_swaps.get(i + 1);
             let (swap_receiver, next_swap_optimization) = self
                 .transfer_optimization
-                .get_receiver(&solution.receiver, next_swap)?;
+                .get_receiver(&solution.receiver, next_swap, unwrap)?;
             next_in_between_swap_optimization_allowed = next_swap_optimization;
 
             let transfer = self
@@ -544,7 +545,6 @@ mod tests {
     };
 
     use super::*;
-    use crate::encoding::models::Swap;
 
     fn eth_chain() -> Chain {
         Chain::Ethereum
@@ -565,8 +565,8 @@ mod tests {
     }
 
     mod single {
-
         use super::*;
+        use crate::encoding::models::SwapBuilder;
         #[test]
         fn test_single_swap_strategy_encoder() {
             // Performs a single swap from WETH to DAI on a USV2 pool, with no grouping
@@ -575,18 +575,16 @@ mod tests {
             let weth = Bytes::from_str("0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2").unwrap();
             let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
 
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
             let swap_encoder_registry = get_swap_encoder_registry();
             let encoder = SingleSwapStrategyEncoder::new(
                 eth_chain(),
@@ -637,18 +635,16 @@ mod tests {
 
             let checked_amount = BigUint::from_str("1_640_000000000000000000").unwrap();
 
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
             let swap_encoder_registry = get_swap_encoder_registry();
             let encoder = SingleSwapStrategyEncoder::new(
                 eth_chain(),
@@ -698,6 +694,7 @@ mod tests {
 
     mod sequential {
         use super::*;
+        use crate::encoding::models::SwapBuilder;
 
         #[test]
         fn test_sequential_swap_strategy_encoder_no_permit2() {
@@ -709,30 +706,26 @@ mod tests {
             let wbtc = Bytes::from_str("0x2260fac5e5542a773aa44fbcfedf7c193bc2c599").unwrap();
             let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
 
-            let swap_weth_wbtc = Swap {
+            let swap_weth_wbtc = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xBb2b8038a1640196FbE3e38816F3e67Cba72D940".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: wbtc.clone(),
+                wbtc.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
+            let swap_wbtc_usdc = SwapBuilder::new(
-            };
+                ProtocolComponent {
-            let swap_wbtc_usdc = Swap {
-                component: ProtocolComponent {
                     id: "0x004375Dff511095CC5A197A54140a24eFEF3A416".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: wbtc.clone(),
+                wbtc.clone(),
-                token_out: usdc.clone(),
+                usdc.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
             let swap_encoder_registry = get_swap_encoder_registry();
             let encoder = SequentialSwapStrategyEncoder::new(
                 eth_chain(),
@@ -790,6 +783,7 @@ mod tests {
 
     mod split {
         use super::*;
+        use crate::encoding::models::SwapBuilder;
 
         #[test]
         fn test_split_input_cyclic_swap() {
@@ -805,8 +799,8 @@ mod tests {
             let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
 
             // USDC -> WETH (Pool 1) - 60% of input
-            let swap_usdc_weth_pool1 = Swap {
+            let swap_usdc_weth_pool1 = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640".to_string(), /* USDC-WETH USV3
                                                                                    * Pool 1 */
                     protocol_system: "uniswap_v3".to_string(),
@@ -820,16 +814,15 @@ mod tests {
                     },
                     ..Default::default()
                 },
-                token_in: usdc.clone(),
+                usdc.clone(),
-                token_out: weth.clone(),
+                weth.clone(),
-                split: 0.6f64, // 60% of input
+            )
-                user_data: None,
+            .split(0.6f64)
-                protocol_state: None,
+            .build();
-            };
 
             // USDC -> WETH (Pool 2) - 40% of input (remaining)
-            let swap_usdc_weth_pool2 = Swap {
+            let swap_usdc_weth_pool2 = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0x8ad599c3A0ff1De082011EFDDc58f1908eb6e6D8".to_string(), /* USDC-WETH USV3
                                                                                    * Pool 2 */
                     protocol_system: "uniswap_v3".to_string(),
@@ -843,16 +836,14 @@ mod tests {
                     },
                     ..Default::default()
                 },
-                token_in: usdc.clone(),
+                usdc.clone(),
-                token_out: weth.clone(),
+                weth.clone(),
-                split: 0f64,
+            )
-                user_data: None, // Remaining 40%
+            .build();
-                protocol_state: None,
-            };
 
             // WETH -> USDC (Pool 2)
-            let swap_weth_usdc_pool2 = Swap {
+            let swap_weth_usdc_pool2 = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc".to_string(), /* USDC-WETH USV2
                                                                                    * Pool 2 */
                     protocol_system: "uniswap_v2".to_string(),
@@ -866,13 +857,10 @@ mod tests {
                     },
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: usdc.clone(),
+                usdc.clone(),
-                split: 0.0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
-
             let swap_encoder_registry = get_swap_encoder_registry();
             let encoder = SplitSwapStrategyEncoder::new(
                 eth_chain(),
@@ -961,8 +949,8 @@ mod tests {
             let weth = Bytes::from_str("0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2").unwrap();
             let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
 
-            let swap_usdc_weth_v2 = Swap {
+            let swap_usdc_weth_v2 = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc".to_string(), // USDC-WETH USV2
                     protocol_system: "uniswap_v2".to_string(),
                     static_attributes: {
@@ -975,15 +963,13 @@ mod tests {
                     },
                     ..Default::default()
                 },
-                token_in: usdc.clone(),
+                usdc.clone(),
-                token_out: weth.clone(),
+                weth.clone(),
-                split: 0.0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
-            let swap_weth_usdc_v3_pool1 = Swap {
+            let swap_weth_usdc_v3_pool1 = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640".to_string(), /* USDC-WETH USV3
                                                                                    * Pool 1 */
                     protocol_system: "uniswap_v3".to_string(),
@@ -997,17 +983,16 @@ mod tests {
                     },
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: usdc.clone(),
+                usdc.clone(),
-                split: 0.6f64,
+            )
-                user_data: None,
+            .split(0.6f64)
-                protocol_state: None,
+            .build();
-            };
 
-            let swap_weth_usdc_v3_pool2 = Swap {
+            let swap_weth_usdc_v3_pool2 = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0x8ad599c3A0ff1De082011EFDDc58f1908eb6e6D8".to_string(), /* USDC-WETH USV3
-                                                                                   * Pool 2 */
+                                                                                   * Pool 1 */
                     protocol_system: "uniswap_v3".to_string(),
                     static_attributes: {
                         let mut attrs = HashMap::new();
@@ -1019,12 +1004,10 @@ mod tests {
                     },
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: usdc.clone(),
+                usdc.clone(),
-                split: 0.0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let swap_encoder_registry = get_swap_encoder_registry();
             let encoder = SplitSwapStrategyEncoder::new(

src/encoding/evm/strategy_encoder/strategy_validators.rs

@@ -197,7 +197,7 @@ mod tests {
     use tycho_common::{models::protocol::ProtocolComponent, Bytes};
 
     use super::*;
-    use crate::encoding::models::Swap;
+    use crate::encoding::models::{Swap, SwapBuilder};
 
     #[test]
     fn test_validate_path_single_swap() {
@@ -205,18 +205,16 @@ mod tests {
         let eth = Bytes::from_str("0x0000000000000000000000000000000000000000").unwrap();
         let weth = Bytes::from_str("0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2").unwrap();
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
-        let swaps = vec![Swap {
+        let swaps = vec![SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                 protocol_system: "uniswap_v2".to_string(),
                 ..Default::default()
             },
-            token_in: weth.clone(),
+            weth.clone(),
-            token_out: dai.clone(),
+            dai.clone(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build()];
-            protocol_state: None,
-        }];
         let result = validator.validate_swap_path(&swaps, &weth, &dai, &None, &eth, &weth);
         assert_eq!(result, Ok(()));
     }
@@ -229,30 +227,27 @@ mod tests {
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
         let swaps = vec![
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.5f64,
+            )
-                user_data: None,
+            .split(0.5f64)
-                protocol_state: None,
+            .build(),
-            },
+            SwapBuilder::new(
-            Swap {
+                ProtocolComponent {
-                component: ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: dai.clone(),
+                dai.clone(),
-                token_out: usdc.clone(),
+                usdc.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build(),
-                protocol_state: None,
-            },
         ];
         let result = validator.validate_swap_path(&swaps, &weth, &usdc, &None, &eth, &weth);
         assert_eq!(result, Ok(()));
@@ -268,31 +263,28 @@ mod tests {
         let wbtc = Bytes::from_str("0x2260fac5e5542a773aa44fbcfedf7c193bc2c599").unwrap();
 
         let disconnected_swaps = vec![
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "pool1".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.5,
+            )
-                user_data: None,
+            .split(0.5f64)
-                protocol_state: None,
+            .build(),
-            },
             // This swap is disconnected from the WETH->DAI path
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "pool2".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: wbtc.clone(),
+                wbtc.clone(),
-                token_out: usdc.clone(),
+                usdc.clone(),
-                split: 0.0,
+            )
-                user_data: None,
+            .build(),
-                protocol_state: None,
-            },
         ];
         let result =
             validator.validate_swap_path(&disconnected_swaps, &weth, &usdc, &None, &eth, &weth);
@@ -310,30 +302,26 @@ mod tests {
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
 
         let cyclic_swaps = vec![
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "pool1".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: usdc.clone(),
+                usdc.clone(),
-                token_out: weth.clone(),
+                weth.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build(),
-                protocol_state: None,
+            SwapBuilder::new(
-            },
+                ProtocolComponent {
-            Swap {
-                component: ProtocolComponent {
                     id: "pool2".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: usdc.clone(),
+                usdc.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build(),
-                protocol_state: None,
-            },
         ];
 
         // Test with USDC as both given token and checked token
@@ -349,18 +337,17 @@ mod tests {
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
 
-        let unreachable_swaps = vec![Swap {
+        let unreachable_swaps = vec![SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 id: "pool1".to_string(),
                 protocol_system: "uniswap_v2".to_string(),
                 ..Default::default()
             },
-            token_in: weth.clone(),
+            weth.clone(),
-            token_out: dai.clone(),
+            dai.clone(),
-            split: 1.0,
+        )
-            user_data: None,
+        .split(1.0)
-            protocol_state: None,
+        .build()];
-        }];
         let result =
             validator.validate_swap_path(&unreachable_swaps, &weth, &usdc, &None, &eth, &weth);
         assert!(matches!(
@@ -389,18 +376,16 @@ mod tests {
         let validator = SplitSwapValidator;
         let weth = Bytes::from_str("0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2").unwrap();
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
-        let swaps = vec![Swap {
+        let swaps = vec![SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                 protocol_system: "uniswap_v2".to_string(),
                 ..Default::default()
             },
-            token_in: weth.clone(),
+            weth.clone(),
-            token_out: dai.clone(),
+            dai.clone(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build()];
-            protocol_state: None,
-        }];
         let result = validator.validate_split_percentages(&swaps);
         assert_eq!(result, Ok(()));
     }
@@ -413,42 +398,38 @@ mod tests {
 
         // Valid case: Multiple swaps with proper splits (50%, 30%, remainder)
         let valid_swaps = vec![
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "pool1".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.5,
+            )
-                user_data: None,
+            .split(0.5)
-                protocol_state: None,
+            .build(),
-            },
+            SwapBuilder::new(
-            Swap {
+                ProtocolComponent {
-                component: ProtocolComponent {
                     id: "pool2".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.3,
+            )
-                user_data: None,
+            .split(0.3)
-                protocol_state: None,
+            .build(),
-            },
+            SwapBuilder::new(
-            Swap {
+                ProtocolComponent {
-                component: ProtocolComponent {
                     id: "pool3".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.0, // Remainder (20%)
+            )
-                user_data: None,
+            .build(),
-                protocol_state: None,
-            },
         ];
         assert!(validator
             .validate_split_percentages(&valid_swaps)
@@ -462,30 +443,28 @@ mod tests {
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
 
         let invalid_total_swaps = vec![
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "pool1".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.7,
+            )
-                user_data: None,
+            .split(0.7)
-                protocol_state: None,
+            .build(),
-            },
+            SwapBuilder::new(
-            Swap {
+                ProtocolComponent {
-                component: ProtocolComponent {
                     id: "pool2".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.3,
+            )
-                user_data: None,
+            .split(0.3)
-                protocol_state: None,
+            .build(),
-            },
         ];
         assert!(matches!(
             validator.validate_split_percentages(&invalid_total_swaps),
@@ -500,30 +479,27 @@ mod tests {
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
 
         let invalid_zero_position_swaps = vec![
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "pool1".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.0,
+            )
-                user_data: None,
+            .build(),
-                protocol_state: None,
+            SwapBuilder::new(
-            },
+                ProtocolComponent {
-            Swap {
-                component: ProtocolComponent {
                     id: "pool2".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.5,
+            )
-                user_data: None,
+            .split(0.5)
-                protocol_state: None,
+            .build(),
-            },
         ];
         assert!(matches!(
             validator.validate_split_percentages(&invalid_zero_position_swaps),
@@ -538,42 +514,38 @@ mod tests {
         let dai = Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap();
 
         let invalid_overflow_swaps = vec![
-            Swap {
+            SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "pool1".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.6,
+            )
-                user_data: None,
+            .split(0.6)
-                protocol_state: None,
+            .build(),
-            },
+            SwapBuilder::new(
-            Swap {
+                ProtocolComponent {
-                component: ProtocolComponent {
                     id: "pool2".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.5,
+            )
-                user_data: None,
+            .split(0.5)
-                protocol_state: None,
+            .build(),
-            },
+            SwapBuilder::new(
-            Swap {
+                ProtocolComponent {
-                component: ProtocolComponent {
                     id: "pool3".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth.clone(),
+                weth.clone(),
-                token_out: dai.clone(),
+                dai.clone(),
-                split: 0.0,
+            )
-                user_data: None,
+            .build(),
-                protocol_state: None,
-            },
         ];
         assert!(matches!(
             validator.validate_split_percentages(&invalid_overflow_swaps),
@@ -588,18 +560,16 @@ mod tests {
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
         let weth = Bytes::from_str("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2").unwrap();
 
-        let swaps = vec![Swap {
+        let swaps = vec![SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 id: "pool1".to_string(),
                 protocol_system: "uniswap_v2".to_string(),
                 ..Default::default()
             },
-            token_in: weth.clone(),
+            weth.clone(),
-            token_out: usdc.clone(),
+            usdc.clone(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build()];
-            protocol_state: None,
-        }];
 
         let result = validator.validate_swap_path(
             &swaps,
@@ -619,18 +589,16 @@ mod tests {
         let usdc = Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap();
         let weth = Bytes::from_str("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2").unwrap();
 
-        let swaps = vec![Swap {
+        let swaps = vec![SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 id: "pool1".to_string(),
                 protocol_system: "uniswap_v2".to_string(),
                 ..Default::default()
             },
-            token_in: usdc.clone(),
+            usdc.clone(),
-            token_out: weth.clone(),
+            weth.clone(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build()];
-            protocol_state: None,
-        }];
 
         let result = validator.validate_swap_path(
             &swaps,

src/encoding/evm/strategy_encoder/transfer_optimizations.rs

@@ -82,6 +82,7 @@ impl TransferOptimization {
         &self,
         solution_receiver: &Bytes,
         next_swap: Option<&SwapGroup>,
+        unwrap: bool,
     ) -> Result<(Bytes, bool), EncodingError> {
         if let Some(next) = next_swap {
             // if the protocol of the next swap supports transfer in optimization
@@ -104,10 +105,14 @@ impl TransferOptimization {
             }
         } else {
             // last swap - there is no next swap
+            if unwrap {
+                Ok((self.router_address.clone(), false))
+            } else {
                 Ok((solution_receiver.clone(), false))
             }
         }
     }
+}
 
 #[cfg(test)]
 mod tests {
@@ -116,7 +121,7 @@ mod tests {
     use tycho_common::models::protocol::ProtocolComponent;
 
     use super::*;
-    use crate::encoding::models::Swap;
+    use crate::encoding::models::SwapBuilder;
 
     fn weth() -> Bytes {
         Bytes::from(hex!("c02aaa39b223fe8d0a0e5c4f27ead9083c756cc2").to_vec())
@@ -169,18 +174,16 @@ mod tests {
         #[case] expected_transfer: TransferType,
     ) {
         // The swap token is the same as the given token, which is not the native token
-        let swaps = vec![Swap {
+        let swaps = vec![SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 protocol_system: "uniswap_v2".to_string(),
                 id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                 ..Default::default()
             },
-            token_in: swap_token_in.clone(),
+            swap_token_in.clone(),
-            token_out: dai(),
+            dai(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build()];
-            protocol_state: None,
-        }];
         let swap = SwapGroup {
             protocol_system: protocol,
             token_in: swap_token_in,
@@ -204,16 +207,19 @@ mod tests {
     }
 
     #[rstest]
-    // there is no next swap -> receiver is the solution receiver
+    // there is no next swap but there is an unwrap -> receiver is the router
-    #[case(None, receiver(), false)]
+    #[case(None, true, router_address(), false)]
+    // there is no next swap and no unwrap -> receiver is the solution receiver
+    #[case(None, false, receiver(), false)]
     // protocol of next swap supports transfer in optimization
-    #[case(Some("uniswap_v2"), component_id(), true)]
+    #[case(Some("uniswap_v2"), false, component_id(), true)]
     // protocol of next swap supports transfer in optimization but is callback constrained
-    #[case(Some("uniswap_v3"), router_address(), false)]
+    #[case(Some("uniswap_v3"), false, router_address(), false)]
     // protocol of next swap does not support transfer in optimization
-    #[case(Some("vm:curve"), router_address(), false)]
+    #[case(Some("vm:curve"), false, router_address(), false)]
     fn test_get_receiver(
         #[case] protocol: Option<&str>,
+        #[case] unwrap: bool,
         #[case] expected_receiver: Bytes,
         #[case] expected_optimization: bool,
     ) {
@@ -232,22 +238,20 @@ mod tests {
                 token_in: usdc(),
                 token_out: dai(),
                 split: 0f64,
-                swaps: vec![Swap {
+                swaps: vec![SwapBuilder::new(
-                    component: ProtocolComponent {
+                    ProtocolComponent {
                         protocol_system: protocol.unwrap().to_string(),
                         id: component_id().to_string(),
                         ..Default::default()
                     },
-                    token_in: usdc(),
+                    usdc(),
-                    token_out: dai(),
+                    dai(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build()],
-                    protocol_state: None,
-                }],
             })
         };
 
-        let result = optimization.get_receiver(&receiver(), next_swap.as_ref());
+        let result = optimization.get_receiver(&receiver(), next_swap.as_ref(), unwrap);
 
         assert!(result.is_ok());
         let (actual_receiver, optimization_flag) = result.unwrap();

src/encoding/evm/swap_encoder/builder.rs

@@ -5,8 +5,9 @@ use tycho_common::models::Chain;
 use crate::encoding::{
     errors::EncodingError,
     evm::swap_encoder::swap_encoders::{
-        BalancerV2SwapEncoder, BalancerV3SwapEncoder, CurveSwapEncoder, EkuboSwapEncoder,
+        BalancerV2SwapEncoder, BalancerV3SwapEncoder, BebopSwapEncoder, CurveSwapEncoder,
-        MaverickV2SwapEncoder, UniswapV2SwapEncoder, UniswapV3SwapEncoder, UniswapV4SwapEncoder,
+        EkuboSwapEncoder, HashflowSwapEncoder, MaverickV2SwapEncoder, UniswapV2SwapEncoder,
+        UniswapV3SwapEncoder, UniswapV4SwapEncoder,
     },
     swap_encoder::SwapEncoder,
 };
@@ -87,6 +88,14 @@ impl SwapEncoderBuilder {
                 self.chain,
                 self.config,
             )?)),
+            "rfq:bebop" => {
+                Ok(Box::new(BebopSwapEncoder::new(self.executor_address, self.chain, self.config)?))
+            }
+            "rfq:hashflow" => Ok(Box::new(HashflowSwapEncoder::new(
+                self.executor_address,
+                self.chain,
+                self.config,
+            )?)),
             _ => Err(EncodingError::FatalError(format!(
                 "Unknown protocol system: {}",
                 self.protocol_system

src/encoding/evm/testing_utils.rs

@@ -0,0 +1,92 @@
+// This module is used in integration tests as well
+use std::{any::Any, collections::HashMap};
+
+use async_trait::async_trait;
+use num_bigint::BigUint;
+use tycho_common::{
+    dto::ProtocolStateDelta,
+    models::{protocol::GetAmountOutParams, token::Token},
+    simulation::{
+        errors::{SimulationError, TransitionError},
+        indicatively_priced::{IndicativelyPriced, SignedQuote},
+        protocol_sim::{Balances, GetAmountOutResult, ProtocolSim},
+    },
+    Bytes,
+};
+
+#[derive(Debug)]
+pub struct MockRFQState {
+    pub quote_amount_out: BigUint,
+    pub quote_data: HashMap<String, Bytes>,
+}
+impl ProtocolSim for MockRFQState {
+    fn fee(&self) -> f64 {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn spot_price(&self, _base: &Token, _quote: &Token) -> Result<f64, SimulationError> {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn get_amount_out(
+        &self,
+        _amount_in: BigUint,
+        _token_in: &Token,
+        _token_out: &Token,
+    ) -> Result<GetAmountOutResult, SimulationError> {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn get_limits(
+        &self,
+        _sell_token: Bytes,
+        _buy_token: Bytes,
+    ) -> Result<(BigUint, BigUint), SimulationError> {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn delta_transition(
+        &mut self,
+        _delta: ProtocolStateDelta,
+        _tokens: &HashMap<Bytes, Token>,
+        _balances: &Balances,
+    ) -> Result<(), TransitionError<String>> {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn clone_box(&self) -> Box<dyn ProtocolSim> {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn as_any(&self) -> &dyn Any {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn as_any_mut(&mut self) -> &mut dyn Any {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn eq(&self, _other: &dyn ProtocolSim) -> bool {
+        panic!("MockRFQState does not implement fee")
+    }
+
+    fn as_indicatively_priced(&self) -> Result<&dyn IndicativelyPriced, SimulationError> {
+        Ok(self)
+    }
+}
+
+#[async_trait]
+impl IndicativelyPriced for MockRFQState {
+    async fn request_signed_quote(
+        &self,
+        params: GetAmountOutParams,
+    ) -> Result<SignedQuote, SimulationError> {
+        Ok(SignedQuote {
+            base_token: params.token_in,
+            quote_token: params.token_out,
+            amount_in: params.amount_in,
+            amount_out: self.quote_amount_out.clone(),
+            quote_attributes: self.quote_data.clone(),
+        })
+    }
+}

src/encoding/evm/tycho_encoders.rs

@@ -406,7 +406,7 @@ mod tests {
     use tycho_common::models::{protocol::ProtocolComponent, Chain};
 
     use super::*;
-    use crate::encoding::models::Swap;
+    use crate::encoding::models::{Swap, SwapBuilder};
 
     fn dai() -> Bytes {
         Bytes::from_str("0x6b175474e89094c44da98b954eedeac495271d0f").unwrap()
@@ -435,48 +435,44 @@ mod tests {
     // Fee and tick spacing information for this test is obtained by querying the
     // USV4 Position Manager contract: 0xbd216513d74c8cf14cf4747e6aaa6420ff64ee9e
     // Using the poolKeys function with the first 25 bytes of the pool id
-    fn swap_usdc_eth_univ4() -> Swap<'static> {
+    fn swap_usdc_eth_univ4() -> Swap {
         let pool_fee_usdc_eth = Bytes::from(BigInt::from(3000).to_signed_bytes_be());
         let tick_spacing_usdc_eth = Bytes::from(BigInt::from(60).to_signed_bytes_be());
         let mut static_attributes_usdc_eth: HashMap<String, Bytes> = HashMap::new();
         static_attributes_usdc_eth.insert("key_lp_fee".into(), pool_fee_usdc_eth);
         static_attributes_usdc_eth.insert("tick_spacing".into(), tick_spacing_usdc_eth);
-        Swap {
+        SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 id: "0xdce6394339af00981949f5f3baf27e3610c76326a700af57e4b3e3ae4977f78d"
                     .to_string(),
                 protocol_system: "uniswap_v4_hooks".to_string(),
                 static_attributes: static_attributes_usdc_eth,
                 ..Default::default()
             },
-            token_in: usdc().clone(),
+            usdc().clone(),
-            token_out: eth().clone(),
+            eth().clone(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build()
-            protocol_state: None,
-        }
     }
 
-    fn swap_eth_pepe_univ4() -> Swap<'static> {
+    fn swap_eth_pepe_univ4() -> Swap {
         let pool_fee_eth_pepe = Bytes::from(BigInt::from(25000).to_signed_bytes_be());
         let tick_spacing_eth_pepe = Bytes::from(BigInt::from(500).to_signed_bytes_be());
         let mut static_attributes_eth_pepe: HashMap<String, Bytes> = HashMap::new();
         static_attributes_eth_pepe.insert("key_lp_fee".into(), pool_fee_eth_pepe);
         static_attributes_eth_pepe.insert("tick_spacing".into(), tick_spacing_eth_pepe);
-        Swap {
+        SwapBuilder::new(
-            component: ProtocolComponent {
+            ProtocolComponent {
                 id: "0xecd73ecbf77219f21f129c8836d5d686bbc27d264742ddad620500e3e548e2c9"
                     .to_string(),
                 protocol_system: "uniswap_v4_hooks".to_string(),
                 static_attributes: static_attributes_eth_pepe,
                 ..Default::default()
             },
-            token_in: eth().clone(),
+            eth().clone(),
-            token_out: pepe().clone(),
+            pepe().clone(),
-            split: 0f64,
+        )
-            user_data: None,
+        .build()
-            protocol_state: None,
-        }
     }
 
     fn router_address() -> Bytes {
@@ -514,18 +510,16 @@ mod tests {
         fn test_encode_router_calldata_single_swap() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
             let eth_amount_in = BigUint::from(1000u32);
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth(),
+                weth().clone(),
-                token_out: dai(),
+                dai().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -580,31 +574,27 @@ mod tests {
         fn test_encode_router_calldata_sequential_swap() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
             let eth_amount_in = BigUint::from(1000u32);
-            let swap_weth_dai = Swap {
+            let swap_weth_dai = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth(),
+                weth().clone(),
-                token_out: dai(),
+                dai().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
-            let swap_dai_usdc = Swap {
+            let swap_dai_usdc = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: dai(),
+                dai().clone(),
-                token_out: usdc(),
+                usdc().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -674,18 +664,16 @@ mod tests {
         #[test]
         fn test_validate_passes_for_wrap() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth(),
+                weth().clone(),
-                token_out: dai(),
+                dai().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -704,18 +692,16 @@ mod tests {
         #[test]
         fn test_validate_fails_for_wrap_wrong_input() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: weth(),
+                weth().clone(),
-                token_out: dai(),
+                dai().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -739,18 +725,16 @@ mod tests {
         #[test]
         fn test_validate_fails_for_wrap_wrong_first_swap() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: eth(),
+                eth().clone(),
-                token_out: dai(),
+                dai().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -794,18 +778,16 @@ mod tests {
         #[test]
         fn test_validate_passes_for_unwrap() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: dai(),
+                dai().clone(),
-                token_out: weth(),
+                weth().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -823,18 +805,16 @@ mod tests {
         #[test]
         fn test_validate_fails_for_unwrap_wrong_output() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: dai(),
+                dai().clone(),
-                token_out: weth(),
+                weth().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -859,18 +839,16 @@ mod tests {
         #[test]
         fn test_validate_fails_for_unwrap_wrong_last_swap() {
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: dai(),
+                dai().clone(),
-                token_out: eth(),
+                eth().clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -900,42 +878,36 @@ mod tests {
             // (some of the pool addresses in this test are fake)
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
             let swaps = vec![
-                Swap {
+                SwapBuilder::new(
-                    component: ProtocolComponent {
+                    ProtocolComponent {
                         id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: dai(),
+                    dai().clone(),
-                    token_out: weth(),
+                    weth().clone(),
-                    split: 0.5f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
+                SwapBuilder::new(
-                },
+                    ProtocolComponent {
-                Swap {
-                    component: ProtocolComponent {
                         id: "0x0000000000000000000000000000000000000000".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: dai(),
+                    dai().clone(),
-                    token_out: weth(),
+                    weth().clone(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
+                SwapBuilder::new(
-                },
+                    ProtocolComponent {
-                Swap {
-                    component: ProtocolComponent {
                         id: "0x0000000000000000000000000000000000000000".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: weth(),
+                    weth().clone(),
-                    token_out: dai(),
+                    dai().clone(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
-                },
             ];
 
             let solution = Solution {
@@ -958,54 +930,46 @@ mod tests {
             // (some of the pool addresses in this test are fake)
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
             let swaps = vec![
-                Swap {
+                SwapBuilder::new(
-                    component: ProtocolComponent {
+                    ProtocolComponent {
                         id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: dai(),
+                    dai().clone(),
-                    token_out: weth(),
+                    weth().clone(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
+                SwapBuilder::new(
-                },
+                    ProtocolComponent {
-                Swap {
-                    component: ProtocolComponent {
                         id: "0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: weth(),
+                    weth().clone(),
-                    token_out: usdc(),
+                    usdc().clone(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
+                SwapBuilder::new(
-                },
+                    ProtocolComponent {
-                Swap {
-                    component: ProtocolComponent {
                         id: "0x0000000000000000000000000000000000000000".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: usdc(),
+                    usdc().clone(),
-                    token_out: dai(),
+                    dai().clone(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
+                SwapBuilder::new(
-                },
+                    ProtocolComponent {
-                Swap {
-                    component: ProtocolComponent {
                         id: "0x0000000000000000000000000000000000000000".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: dai(),
+                    dai().clone(),
-                    token_out: wbtc(),
+                    wbtc().clone(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
-                },
             ];
 
             let solution = Solution {
@@ -1035,42 +999,37 @@ mod tests {
             // (some of the pool addresses in this test are fake)
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
             let swaps = vec![
-                Swap {
+                SwapBuilder::new(
-                    component: ProtocolComponent {
+                    ProtocolComponent {
                         id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: weth(),
+                    weth(),
-                    token_out: dai(),
+                    dai(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
+                SwapBuilder::new(
-                },
+                    ProtocolComponent {
-                Swap {
-                    component: ProtocolComponent {
                         id: "0x0000000000000000000000000000000000000000".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: dai(),
+                    dai(),
-                    token_out: weth(),
+                    weth(),
-                    split: 0.5f64,
+                )
-                    user_data: None,
+                .split(0.5)
-                    protocol_state: None,
+                .build(),
-                },
+                SwapBuilder::new(
-                Swap {
+                    ProtocolComponent {
-                    component: ProtocolComponent {
                         id: "0x0000000000000000000000000000000000000000".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: dai(),
+                    dai(),
-                    token_out: weth(),
+                    weth(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
-                },
             ];
 
             let solution = Solution {
@@ -1093,30 +1052,26 @@ mod tests {
             // (some of the pool addresses in this test are fake)
             let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
             let swaps = vec![
-                Swap {
+                SwapBuilder::new(
-                    component: ProtocolComponent {
+                    ProtocolComponent {
                         id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: weth(),
+                    weth(),
-                    token_out: dai(),
+                    dai(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
+                SwapBuilder::new(
-                },
+                    ProtocolComponent {
-                Swap {
+                        id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
-                    component: ProtocolComponent {
-                        id: "0x0000000000000000000000000000000000000000".to_string(),
                         protocol_system: "uniswap_v2".to_string(),
                         ..Default::default()
                     },
-                    token_in: dai(),
+                    dai(),
-                    token_out: weth(),
+                    weth(),
-                    split: 0f64,
+                )
-                    user_data: None,
+                .build(),
-                    protocol_state: None,
-                },
             ];
 
             let solution = Solution {
@@ -1150,7 +1105,7 @@ mod tests {
         use tycho_common::{models::protocol::ProtocolComponent, Bytes};
 
         use super::*;
-        use crate::encoding::models::{Solution, Swap};
+        use crate::encoding::models::Solution;
 
         #[test]
         fn test_executor_encoder_encode() {
@@ -1160,18 +1115,16 @@ mod tests {
             let token_in = weth();
             let token_out = dai();
 
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
                     id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: token_in.clone(),
+                token_in.clone(),
-                token_out: token_out.clone(),
+                token_out.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,
@@ -1222,17 +1175,16 @@ mod tests {
             let token_in = weth();
             let token_out = dai();
 
-            let swap = Swap {
+            let swap = SwapBuilder::new(
-                component: ProtocolComponent {
+                ProtocolComponent {
+                    id: "0xA478c2975Ab1Ea89e8196811F51A7B7Ade33eB11".to_string(),
                     protocol_system: "uniswap_v2".to_string(),
                     ..Default::default()
                 },
-                token_in: token_in.clone(),
+                token_in.clone(),
-                token_out: token_out.clone(),
+                token_out.clone(),
-                split: 0f64,
+            )
-                user_data: None,
+            .build();
-                protocol_state: None,
-            };
 
             let solution = Solution {
                 exact_out: false,

src/encoding/evm/utils.rs

@@ -78,6 +78,9 @@ pub fn get_static_attribute(swap: &Swap, attribute_name: &str) -> Result<Vec<u8>
         .to_vec())
 }
 
+/// Returns the current Tokio runtime handle, or creates a new one if it doesn't exist.
+/// It also returns the runtime to prevent it from being dropped before use.
+/// This is required since tycho-execution does not have a pre-existing runtime.
 pub fn get_runtime() -> Result<(Handle, Option<Arc<Runtime>>), EncodingError> {
     match Handle::try_current() {
         Ok(h) => Ok((h, None)),

src/encoding/models.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 use clap::ValueEnum;
 use num_bigint::BigUint;
 use serde::{Deserialize, Serialize};
@@ -35,7 +37,7 @@ pub enum UserTransferType {
 /// Represents a solution containing details describing an order, and  instructions for filling
 /// the order.
 #[derive(Clone, Default, Debug, Deserialize, Serialize)]
-pub struct Solution<'a> {
+pub struct Solution {
     /// Address of the sender.
     pub sender: Bytes,
     /// Address of the receiver.
@@ -55,7 +57,7 @@ pub struct Solution<'a> {
     #[serde(with = "biguint_string")]
     pub checked_amount: BigUint,
     /// List of swaps to fulfill the solution.
-    pub swaps: Vec<Swap<'a>>,
+    pub swaps: Vec<Swap>,
     /// If set, the corresponding native action will be executed.
     pub native_action: Option<NativeAction>,
 }
@@ -74,7 +76,7 @@ pub enum NativeAction {
 
 /// Represents a swap operation to be performed on a pool.
 #[derive(Clone, Debug, Deserialize, Serialize)]
-pub struct Swap<'a> {
+pub struct Swap {
     /// Protocol component from tycho indexer
     pub component: ProtocolComponent,
     /// Token being input into the pool.
@@ -88,33 +90,106 @@ pub struct Swap<'a> {
     pub user_data: Option<Bytes>,
     /// Optional protocol state used to perform the swap.
     #[serde(skip)]
-    pub protocol_state: Option<&'a dyn ProtocolSim>,
+    pub protocol_state: Option<Arc<dyn ProtocolSim>>,
+    /// Optional estimated amount in for this Swap. This is necessary for RFQ protocols. This value
+    /// is used to request the quote
+    pub estimated_amount_in: Option<BigUint>,
 }
 
-impl<'a> Swap<'a> {
+impl Swap {
     pub fn new<T: Into<ProtocolComponent>>(
         component: T,
         token_in: Bytes,
         token_out: Bytes,
         split: f64,
         user_data: Option<Bytes>,
-        protocol_state: Option<&'a dyn ProtocolSim>,
+        protocol_state: Option<Arc<dyn ProtocolSim>>,
+        estimated_amount_in: Option<BigUint>,
     ) -> Self {
-        Self { component: component.into(), token_in, token_out, split, user_data, protocol_state }
+        Self {
+            component: component.into(),
+            token_in,
+            token_out,
+            split,
+            user_data,
+            protocol_state,
+            estimated_amount_in,
+        }
     }
 }
 
-impl<'a> PartialEq for Swap<'a> {
+impl PartialEq for Swap {
     fn eq(&self, other: &Self) -> bool {
         self.component == other.component &&
             self.token_in == other.token_in &&
             self.token_out == other.token_out &&
             self.split == other.split &&
-            self.user_data == other.user_data
+            self.user_data == other.user_data &&
+            self.estimated_amount_in == other.estimated_amount_in
         // Skip protocol_state comparison since trait objects don't implement PartialEq
     }
 }
 
+pub struct SwapBuilder {
+    component: ProtocolComponent,
+    token_in: Bytes,
+    token_out: Bytes,
+    split: f64,
+    user_data: Option<Bytes>,
+    protocol_state: Option<Arc<dyn ProtocolSim>>,
+    estimated_amount_in: Option<BigUint>,
+}
+
+impl SwapBuilder {
+    pub fn new<T: Into<ProtocolComponent>>(
+        component: T,
+        token_in: Bytes,
+        token_out: Bytes,
+    ) -> Self {
+        Self {
+            component: component.into(),
+            token_in,
+            token_out,
+            split: 0.0,
+            user_data: None,
+            protocol_state: None,
+            estimated_amount_in: None,
+        }
+    }
+
+    pub fn split(mut self, split: f64) -> Self {
+        self.split = split;
+        self
+    }
+
+    pub fn user_data(mut self, user_data: Bytes) -> Self {
+        self.user_data = Some(user_data);
+        self
+    }
+
+    pub fn protocol_state(mut self, protocol_state: Arc<dyn ProtocolSim>) -> Self {
+        self.protocol_state = Some(protocol_state);
+        self
+    }
+
+    pub fn estimated_amount_in(mut self, estimated_amount_in: BigUint) -> Self {
+        self.estimated_amount_in = Some(estimated_amount_in);
+        self
+    }
+
+    pub fn build(self) -> Swap {
+        Swap {
+            component: self.component,
+            token_in: self.token_in,
+            token_out: self.token_out,
+            split: self.split,
+            user_data: self.user_data,
+            protocol_state: self.protocol_state,
+            estimated_amount_in: self.estimated_amount_in,
+        }
+    }
+}
+
 /// Represents a transaction to be executed.
 ///
 /// # Fields
@@ -262,6 +337,7 @@ mod tests {
             0.5,
             user_data.clone(),
             None,
+            None,
         );
         assert_eq!(swap.token_in, Bytes::from("0x12"));
         assert_eq!(swap.token_out, Bytes::from("0x34"));

tests/common/mod.rs

@@ -3,7 +3,10 @@ pub mod encoding;
 
 use std::str::FromStr;
 
-use alloy::{primitives::B256, signers::local::PrivateKeySigner};
+use alloy::{
+    primitives::{B256, U256},
+    signers::local::PrivateKeySigner,
+};
 use tycho_common::{models::Chain, Bytes};
 use tycho_execution::encoding::{
     evm::encoder_builders::TychoRouterEncoderBuilder, models::UserTransferType,
@@ -14,6 +17,14 @@ pub fn router_address() -> Bytes {
     Bytes::from_str("0x3Ede3eCa2a72B3aeCC820E955B36f38437D01395").unwrap()
 }
 
+pub fn bob_address() -> Bytes {
+    Bytes::from_str("0x1D96F2f6BeF1202E4Ce1Ff6Dad0c2CB002861d3e").unwrap()
+}
+
+pub fn alice_address() -> Bytes {
+    Bytes::from_str("0xcd09f75E2BF2A4d11F3AB23f1389FcC1621c0cc2").unwrap()
+}
+
 pub fn eth_chain() -> Chain {
     Chain::Ethereum
 }
@@ -46,6 +57,10 @@ pub fn usdt() -> Bytes {
     Bytes::from_str("0xdAC17F958D2ee523a2206206994597C13D831ec7").unwrap()
 }
 
+pub fn ondo() -> Bytes {
+    Bytes::from_str("0xfAbA6f8e4a5E8Ab82F62fe7C39859FA577269BE3").unwrap()
+}
+
 pub fn get_signer() -> PrivateKeySigner {
     // Set up a mock private key for signing (Alice's pk in our contract tests)
     let private_key =
@@ -57,10 +72,26 @@ pub fn get_signer() -> PrivateKeySigner {
 
 pub fn get_tycho_router_encoder(user_transfer_type: UserTransferType) -> Box<dyn TychoEncoder> {
     TychoRouterEncoderBuilder::new()
-        .chain(tycho_common::models::Chain::Ethereum)
+        .chain(Chain::Ethereum)
         .user_transfer_type(user_transfer_type)
         .executors_file_path("config/test_executor_addresses.json".to_string())
         .router_address(router_address())
         .build()
         .expect("Failed to build encoder")
 }
+
+/// Builds the complete Bebop calldata in the format expected by the encoder
+/// Returns: [ partial_fill_offset (u8) | original_taker_amount (U256) | calldata (bytes (selector +
+/// ABI encoded params)) ]
+pub fn build_bebop_calldata(
+    calldata: &[u8],
+    partial_fill_offset: u8,
+    original_taker_amount: U256,
+) -> Bytes {
+    let mut user_data = Vec::with_capacity(1 + 32 + calldata.len());
+    user_data.push(partial_fill_offset);
+    user_data.extend_from_slice(&original_taker_amount.to_be_bytes::<32>());
+    user_data.extend_from_slice(calldata);
+
+    Bytes::from(user_data)
+}

tests/optimized_transfers_integration_tests.rs

@@ -1,15 +1,19 @@
-use std::{collections::HashMap, str::FromStr};
+use std::{collections::HashMap, str::FromStr, sync::Arc};
 
 use alloy::hex::encode;
 use num_bigint::{BigInt, BigUint};
 use tycho_common::{models::protocol::ProtocolComponent, Bytes};
 use tycho_execution::encoding::{
-    evm::utils::write_calldata_to_file,
+    evm::{
-    models::{Solution, Swap, UserTransferType},
+        testing_utils::MockRFQState,
+        utils::{biguint_to_u256, write_calldata_to_file},
+    },
+    models::{Solution, Swap, SwapBuilder, UserTransferType},
 };
 
 use crate::common::{
-    encoding::encode_tycho_router_call, eth, eth_chain, get_signer, get_tycho_router_encoder, weth,
+    alice_address, bob_address, encoding::encode_tycho_router_call, eth, eth_chain, get_signer,
+    get_tycho_router_encoder, usdc, wbtc, weth,
 };
 
 mod common;
@@ -49,6 +53,7 @@ fn test_uniswap_v3_uniswap_v2() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_wbtc_usdc = Swap {
         component: ProtocolComponent {
@@ -61,6 +66,7 @@ fn test_uniswap_v3_uniswap_v2() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
 
@@ -130,6 +136,7 @@ fn test_uniswap_v3_uniswap_v3() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_wbtc_usdc = Swap {
         component: ProtocolComponent {
@@ -150,6 +157,7 @@ fn test_uniswap_v3_uniswap_v3() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
 
@@ -218,6 +226,7 @@ fn test_uniswap_v3_curve() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let swap_wbtc_usdt = Swap {
@@ -248,6 +257,7 @@ fn test_uniswap_v3_curve() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
 
@@ -308,6 +318,7 @@ fn test_balancer_v2_uniswap_v2() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let swap_wbtc_usdc = Swap {
@@ -321,6 +332,7 @@ fn test_balancer_v2_uniswap_v2() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
 
@@ -384,6 +396,7 @@ fn test_multi_protocol() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let balancer_swap_weth_wbtc = Swap {
@@ -397,6 +410,7 @@ fn test_multi_protocol() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let curve_swap_wbtc_usdt = Swap {
@@ -427,6 +441,7 @@ fn test_multi_protocol() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     // Ekubo
@@ -450,6 +465,7 @@ fn test_multi_protocol() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     // USV4
@@ -474,6 +490,7 @@ fn test_multi_protocol() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
@@ -547,6 +564,7 @@ fn test_uniswap_v3_balancer_v3() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_wbtc_qnt = Swap {
         component: ProtocolComponent {
@@ -559,6 +577,7 @@ fn test_uniswap_v3_balancer_v3() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
 
@@ -593,3 +612,227 @@ fn test_uniswap_v3_balancer_v3() {
     let hex_calldata = encode(&calldata);
     write_calldata_to_file("test_uniswap_v3_balancer_v3", hex_calldata.as_str());
 }
+
+#[test]
+fn test_uniswap_v3_bebop() {
+    // Note: This test does not assert anything. It is only used to obtain
+    // integration test data for our router solidity test.
+    //
+    // Performs a sequential swap from WETH to WBTC through USDC using USV3 and
+    // Bebop RFQ
+    //
+    //   WETH ───(USV3)──> USDC ───(Bebop RFQ)──> WBTC
+
+    let weth = weth();
+    let usdc = usdc();
+    let wbtc = wbtc();
+
+    // First swap: WETH -> USDC via UniswapV3
+    let swap_weth_usdc = SwapBuilder::new(
+        ProtocolComponent {
+            id: "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640".to_string(), /* WETH-USDC USV3 Pool
+                                                                           * 0.05% */
+            protocol_system: "uniswap_v3".to_string(),
+            static_attributes: {
+                let mut attrs = HashMap::new();
+                attrs
+                    .insert("fee".to_string(), Bytes::from(BigInt::from(500).to_signed_bytes_be()));
+                attrs
+            },
+            ..Default::default()
+        },
+        weth.clone(),
+        usdc.clone(),
+    )
+    .build();
+
+    // Second swap: USDC -> WBTC via Bebop RFQ using real order data
+    let bebop_calldata = Bytes::from_str("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").unwrap();
+    let partial_fill_offset = 12u64;
+    let quote_amount_out = BigUint::from_str("1672307").unwrap();
+
+    let bebop_state = MockRFQState {
+        quote_amount_out,
+        quote_data: HashMap::from([
+            ("calldata".to_string(), bebop_calldata),
+            (
+                "partial_fill_offset".to_string(),
+                Bytes::from(
+                    partial_fill_offset
+                        .to_be_bytes()
+                        .to_vec(),
+                ),
+            ),
+        ]),
+    };
+
+    let bebop_component = ProtocolComponent {
+        id: String::from("bebop-rfq"),
+        protocol_system: String::from("rfq:bebop"),
+        ..Default::default()
+    };
+
+    let swap_usdc_wbtc = SwapBuilder::new(bebop_component, usdc.clone(), wbtc.clone())
+        .estimated_amount_in(BigUint::from_str("2021750881").unwrap())
+        .protocol_state(Arc::new(bebop_state))
+        .build();
+
+    let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
+
+    let solution = Solution {
+        exact_out: false,
+        given_token: weth,
+        given_amount: BigUint::from_str("1000000000000000000").unwrap(), // 0.099 WETH
+        checked_token: wbtc,
+        checked_amount: BigUint::from_str("1672307").unwrap(),
+        sender: bob_address(),
+        receiver: bob_address(),
+        swaps: vec![swap_weth_usdc, swap_usdc_wbtc],
+        ..Default::default()
+    };
+
+    let encoded_solution = encoder
+        .encode_solutions(vec![solution.clone()])
+        .unwrap()[0]
+        .clone();
+
+    let calldata = encode_tycho_router_call(
+        eth_chain().id(),
+        encoded_solution,
+        &solution,
+        &UserTransferType::TransferFrom,
+        &eth(),
+        None,
+    )
+    .unwrap()
+    .data;
+
+    let hex_calldata = encode(&calldata);
+    write_calldata_to_file("test_uniswap_v3_bebop", hex_calldata.as_str());
+}
+
+#[test]
+#[ignore]
+fn test_uniswap_v3_hashflow() {
+    // Note: This test does not assert anything. It is only used to obtain
+    // integration test data for our router solidity test.
+    //
+    // Performs a sequential swap from WETH to WBTC through USDC using USV3 and
+    // Hashflow RFQ
+    //
+    //   WETH ───(USV3)──> USDC ───(Hashflow RFQ)──> WBTC
+
+    let weth = weth();
+    let usdc = usdc();
+    let wbtc = wbtc();
+
+    // First swap: WETH -> USDC via UniswapV3
+    let swap_weth_usdc = SwapBuilder::new(
+        ProtocolComponent {
+            id: "0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640".to_string(), /* WETH-USDC USV3 Pool
+                                                                           * 0.05% */
+            protocol_system: "uniswap_v3".to_string(),
+            static_attributes: {
+                let mut attrs = HashMap::new();
+                attrs
+                    .insert("fee".to_string(), Bytes::from(BigInt::from(500).to_signed_bytes_be()));
+                attrs
+            },
+            ..Default::default()
+        },
+        weth.clone(),
+        usdc.clone(),
+    )
+    .build();
+
+    // Second swap: USDC -> WBTC via Hashflow RFQ using real order data
+    let quote_amount_out = BigUint::from_str("3714751").unwrap();
+
+    let hashflow_state = MockRFQState {
+        quote_amount_out,
+        quote_data: HashMap::from([
+            (
+                "pool".to_string(),
+                Bytes::from_str("0x478eca1b93865dca0b9f325935eb123c8a4af011").unwrap(),
+            ),
+            (
+                "external_account".to_string(),
+                Bytes::from_str("0xbee3211ab312a8d065c4fef0247448e17a8da000").unwrap(),
+            ),
+            (
+                "trader".to_string(),
+                Bytes::from_str("0xcd09f75e2bf2a4d11f3ab23f1389fcc1621c0cc2").unwrap(),
+            ),
+            (
+                "base_token".to_string(),
+                Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap(),
+            ),
+            (
+                "quote_token".to_string(),
+                Bytes::from_str("0x2260fac5e5542a773aa44fbcfedf7c193bc2c599").unwrap(),
+            ),
+            (
+                "base_token_amount".to_string(),
+                Bytes::from(biguint_to_u256(&BigUint::from(4308094737_u64)).to_be_bytes::<32>().to_vec()),
+            ),
+            (
+                "quote_token_amount".to_string(),
+                Bytes::from(biguint_to_u256(&BigUint::from(3714751_u64)).to_be_bytes::<32>().to_vec()),
+            ),
+            ("quote_expiry".to_string(), Bytes::from(biguint_to_u256(&BigUint::from(1755610328_u64)).to_be_bytes::<32>().to_vec())),
+            ("nonce".to_string(), Bytes::from(biguint_to_u256(&BigUint::from(1755610283723_u64)).to_be_bytes::<32>().to_vec())),
+            (
+                "tx_id".to_string(),
+                Bytes::from_str(
+                    "0x125000064000640000001747eb8c38ffffffffffffff0029642016edb36d0000",
+                )
+                    .unwrap(),
+            ),
+            ("signature".to_string(), Bytes::from_str("0x6ddb3b21fe8509e274ddf46c55209cdbf30360944abbca6569ed6b26740d052f419964dcb5a3bdb98b4ed1fb3642a2760b8312118599a962251f7a8f73fe4fbe1c").unwrap()),
+        ]),
+    };
+
+    let hashflow_component = ProtocolComponent {
+        id: String::from("hashflow-rfq"),
+        protocol_system: String::from("rfq:hashflow"),
+        ..Default::default()
+    };
+
+    let swap_usdc_wbtc = SwapBuilder::new(hashflow_component, usdc.clone(), wbtc.clone())
+        .estimated_amount_in(BigUint::from_str("4308094737").unwrap())
+        .protocol_state(Arc::new(hashflow_state))
+        .build();
+
+    let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
+
+    let solution = Solution {
+        exact_out: false,
+        given_token: weth,
+        given_amount: BigUint::from_str("1000000000000000000").unwrap(),
+        checked_token: wbtc,
+        checked_amount: BigUint::from_str("3714751").unwrap(),
+        sender: alice_address(),
+        receiver: alice_address(),
+        swaps: vec![swap_weth_usdc, swap_usdc_wbtc],
+        ..Default::default()
+    };
+
+    let encoded_solution = encoder
+        .encode_solutions(vec![solution.clone()])
+        .unwrap()[0]
+        .clone();
+
+    let calldata = encode_tycho_router_call(
+        eth_chain().id(),
+        encoded_solution,
+        &solution,
+        &UserTransferType::TransferFrom,
+        &eth(),
+        None,
+    )
+    .unwrap()
+    .data;
+
+    let hex_calldata = encode(&calldata);
+    write_calldata_to_file("test_uniswap_v3_hashflow", hex_calldata.as_str());
+}

tests/protocol_integration_tests.rs

@@ -1,18 +1,22 @@
 mod common;
-use std::{collections::HashMap, str::FromStr};
+use std::{collections::HashMap, str::FromStr, sync::Arc};
 
-use alloy::hex::encode;
+use alloy::{hex, hex::encode};
 use num_bigint::{BigInt, BigUint};
 use tycho_common::{models::protocol::ProtocolComponent, Bytes};
 use tycho_execution::encoding::{
-    evm::utils::write_calldata_to_file,
+    evm::{
-    models::{Solution, Swap, UserTransferType},
+        testing_utils::MockRFQState,
+        utils::{biguint_to_u256, write_calldata_to_file},
+    },
+    models::{Solution, Swap, SwapBuilder, UserTransferType},
 };
 
 use crate::common::{
-    encoding::encode_tycho_router_call, eth, eth_chain, get_signer, get_tycho_router_encoder, pepe,
+    alice_address, build_bebop_calldata, encoding::encode_tycho_router_call, eth, eth_chain,
-    usdc, weth,
+    get_signer, get_tycho_router_encoder, ondo, pepe, usdc, wbtc, weth,
 };
+
 #[test]
 fn test_single_encoding_strategy_ekubo() {
     //   ETH ──(EKUBO)──> USDC
@@ -41,6 +45,7 @@ fn test_single_encoding_strategy_ekubo() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
@@ -94,6 +99,7 @@ fn test_single_encoding_strategy_maverick() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
@@ -159,6 +165,7 @@ fn test_single_encoding_strategy_usv4_eth_in() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
 
@@ -226,6 +233,7 @@ fn test_single_encoding_strategy_usv4_eth_out() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
@@ -301,6 +309,7 @@ fn test_single_encoding_strategy_usv4_grouped_swap() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let swap_eth_pepe = Swap {
@@ -315,6 +324,7 @@ fn test_single_encoding_strategy_usv4_grouped_swap() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
 
@@ -427,6 +437,7 @@ fn test_single_encoding_strategy_curve() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
@@ -495,6 +506,7 @@ fn test_single_encoding_strategy_curve_st_eth() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
@@ -549,6 +561,7 @@ fn test_single_encoding_strategy_balancer_v3() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
@@ -584,3 +597,230 @@ fn test_single_encoding_strategy_balancer_v3() {
     let hex_calldata = encode(&calldata);
     write_calldata_to_file("test_single_encoding_strategy_balancer_v3", hex_calldata.as_str());
 }
+
+#[test]
+fn test_single_encoding_strategy_bebop() {
+    // The quote was done separately where the sender is the router and the receiver is a random
+    // user
+    let _router = Bytes::from_str("0x3Ede3eCa2a72B3aeCC820E955B36f38437D01395").unwrap();
+    let user = Bytes::from_str("0xd2068e04cf586f76eece7ba5beb779d7bb1474a1").unwrap();
+
+    let token_in = usdc();
+    let token_out = ondo();
+    let amount_in = BigUint::from_str("200000000").unwrap(); // 200 USDC
+    let amount_out = BigUint::from_str("194477331556159832309").unwrap(); // 203.8 ONDO
+    let partial_fill_offset = 12;
+
+    let calldata = Bytes::from_str("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").unwrap();
+    let user_data =
+        build_bebop_calldata(&calldata, partial_fill_offset, biguint_to_u256(&amount_in));
+
+    let bebop_component = ProtocolComponent {
+        id: String::from("bebop-rfq"),
+        protocol_system: String::from("rfq:bebop"),
+        static_attributes: HashMap::new(), // No static attributes needed
+        ..Default::default()
+    };
+
+    let swap = SwapBuilder::new(bebop_component, token_in.clone(), token_out.clone())
+        .user_data(user_data)
+        .build();
+
+    let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
+
+    let solution = Solution {
+        exact_out: false,
+        given_token: token_in,
+        given_amount: amount_in,
+        checked_token: token_out,
+        checked_amount: amount_out, // Expected output amount
+        sender: user.clone(),
+        receiver: user,
+        swaps: vec![swap],
+        ..Default::default()
+    };
+
+    let encoded_solution = encoder
+        .encode_solutions(vec![solution.clone()])
+        .unwrap()[0]
+        .clone();
+
+    let calldata = encode_tycho_router_call(
+        eth_chain().id(),
+        encoded_solution,
+        &solution,
+        &UserTransferType::TransferFrom,
+        &eth(),
+        None,
+    )
+    .unwrap()
+    .data;
+    let hex_calldata = hex::encode(&calldata);
+    write_calldata_to_file("test_single_encoding_strategy_bebop", hex_calldata.as_str());
+}
+
+#[test]
+fn test_single_encoding_strategy_bebop_aggregate() {
+    // The quote was done separately where the sender is the router and the receiver is a random
+    // user
+    let _router = Bytes::from_str("0x3Ede3eCa2a72B3aeCC820E955B36f38437D01395").unwrap();
+    let user = Bytes::from_str("0xd2068e04cf586f76eece7ba5beb779d7bb1474a1").unwrap();
+
+    let token_in = usdc();
+    let token_out = ondo();
+    let amount_in = BigUint::from_str("20000000000").unwrap(); // 20k USDC
+    let amount_out = BigUint::from_str("18699321819466078474202").unwrap(); // 203.8 ONDO
+    let partial_fill_offset = 2;
+
+    let calldata = Bytes::from_str("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").unwrap();
+    let user_data =
+        build_bebop_calldata(&calldata, partial_fill_offset, biguint_to_u256(&amount_in));
+
+    let bebop_component = ProtocolComponent {
+        id: String::from("bebop-rfq"),
+        protocol_system: String::from("rfq:bebop"),
+        static_attributes: HashMap::new(),
+        ..Default::default()
+    };
+
+    let swap = SwapBuilder::new(bebop_component, token_in.clone(), token_out.clone())
+        .user_data(user_data)
+        .build();
+
+    let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
+
+    let solution = Solution {
+        exact_out: false,
+        given_token: token_in.clone(),
+        given_amount: amount_in,
+        checked_token: token_out,
+        checked_amount: amount_out,
+        sender: user.clone(),
+        receiver: user,
+        swaps: vec![swap],
+        ..Default::default()
+    };
+
+    let encoded_solution = encoder
+        .encode_solutions(vec![solution.clone()])
+        .unwrap()[0]
+        .clone();
+
+    let calldata = encode_tycho_router_call(
+        eth_chain().id(),
+        encoded_solution,
+        &solution,
+        &UserTransferType::TransferFrom,
+        &eth(),
+        None,
+    )
+    .unwrap()
+    .data;
+    let hex_calldata = hex::encode(&calldata);
+
+    write_calldata_to_file("test_single_encoding_strategy_bebop_aggregate", hex_calldata.as_str());
+}
+
+#[test]
+fn test_single_encoding_strategy_hashflow() {
+    // Note: This test does not assert anything. It is only used to obtain
+    // integration test data for our router solidity test.
+    //
+    // Performs a swap from USDC to WBTC using Hashflow RFQ
+    //
+    //   USDC ───(Hashflow RFQ)──> WBTC
+
+    let usdc = usdc();
+    let wbtc = wbtc();
+
+    // USDC -> WBTC via Hashflow RFQ using real order data
+    let quote_amount_out = BigUint::from_str("3714751").unwrap();
+
+    let hashflow_state = MockRFQState {
+        quote_amount_out,
+        quote_data: HashMap::from([
+            (
+                "pool".to_string(),
+                Bytes::from_str("0x478eca1b93865dca0b9f325935eb123c8a4af011").unwrap(),
+            ),
+            (
+                "external_account".to_string(),
+                Bytes::from_str("0xbee3211ab312a8d065c4fef0247448e17a8da000").unwrap(),
+            ),
+            (
+                "trader".to_string(),
+                Bytes::from_str("0xcd09f75e2bf2a4d11f3ab23f1389fcc1621c0cc2").unwrap(),
+            ),
+            (
+                "base_token".to_string(),
+                Bytes::from_str("0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48").unwrap(),
+            ),
+            (
+                "quote_token".to_string(),
+                Bytes::from_str("0x2260fac5e5542a773aa44fbcfedf7c193bc2c599").unwrap(),
+            ),
+            (
+                "base_token_amount".to_string(),
+                Bytes::from(biguint_to_u256(&BigUint::from(4308094737_u64)).to_be_bytes::<32>().to_vec()),
+            ),
+            (
+                "quote_token_amount".to_string(),
+                Bytes::from(biguint_to_u256(&BigUint::from(3714751_u64)).to_be_bytes::<32>().to_vec()),
+            ),
+            ("quote_expiry".to_string(), Bytes::from(biguint_to_u256(&BigUint::from(1755610328_u64)).to_be_bytes::<32>().to_vec())),
+            ("nonce".to_string(), Bytes::from(biguint_to_u256(&BigUint::from(1755610283723_u64)).to_be_bytes::<32>().to_vec())),
+            (
+                "tx_id".to_string(),
+                Bytes::from_str(
+                    "0x125000064000640000001747eb8c38ffffffffffffff0029642016edb36d0000",
+                )
+                    .unwrap(),
+            ),
+            ("signature".to_string(), Bytes::from_str("0x6ddb3b21fe8509e274ddf46c55209cdbf30360944abbca6569ed6b26740d052f419964dcb5a3bdb98b4ed1fb3642a2760b8312118599a962251f7a8f73fe4fbe1c").unwrap()),
+        ]),
+    };
+
+    let hashflow_component = ProtocolComponent {
+        id: String::from("hashflow-rfq"),
+        protocol_system: String::from("rfq:hashflow"),
+        ..Default::default()
+    };
+
+    let swap_usdc_wbtc = SwapBuilder::new(hashflow_component, usdc.clone(), wbtc.clone())
+        .estimated_amount_in(BigUint::from_str("4308094737").unwrap())
+        .protocol_state(Arc::new(hashflow_state))
+        .build();
+
+    let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
+
+    let solution = Solution {
+        exact_out: false,
+        given_token: usdc,
+        given_amount: BigUint::from_str("4308094737").unwrap(),
+        checked_token: wbtc,
+        checked_amount: BigUint::from_str("3714751").unwrap(),
+        sender: alice_address(),
+        receiver: alice_address(),
+        swaps: vec![swap_usdc_wbtc],
+        ..Default::default()
+    };
+
+    let encoded_solution = encoder
+        .encode_solutions(vec![solution.clone()])
+        .unwrap()[0]
+        .clone();
+
+    let calldata = encode_tycho_router_call(
+        eth_chain().id(),
+        encoded_solution,
+        &solution,
+        &UserTransferType::TransferFrom,
+        &eth(),
+        None,
+    )
+    .unwrap()
+    .data;
+
+    let hex_calldata = encode(&calldata);
+    write_calldata_to_file("test_single_encoding_strategy_hashflow", hex_calldata.as_str());
+}

tests/sequential_strategy_integration_tests.rs

@@ -6,7 +6,7 @@ use num_bigint::{BigInt, BigUint};
 use tycho_common::{models::protocol::ProtocolComponent, Bytes};
 use tycho_execution::encoding::{
     evm::utils::write_calldata_to_file,
-    models::{Solution, Swap, UserTransferType},
+    models::{NativeAction, Solution, Swap, UserTransferType},
 };
 
 use crate::common::{
@@ -19,7 +19,7 @@ fn test_sequential_swap_strategy_encoder() {
     // Note: This test does not assert anything. It is only used to obtain integration
     // test data for our router solidity test.
     //
-    // Performs a sequential swap from WETH to USDC though WBTC using USV2 pools
+    // Performs a sequential swap from WETH to USDC through WBTC using USV2 pools
     //
     //   WETH ───(USV2)──> WBTC ───(USV2)──> USDC
 
@@ -38,6 +38,7 @@ fn test_sequential_swap_strategy_encoder() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_wbtc_usdc = Swap {
         component: ProtocolComponent {
@@ -50,6 +51,7 @@ fn test_sequential_swap_strategy_encoder() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
 
@@ -106,6 +108,7 @@ fn test_sequential_swap_strategy_encoder_no_permit2() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_wbtc_usdc = Swap {
         component: ProtocolComponent {
@@ -118,6 +121,7 @@ fn test_sequential_swap_strategy_encoder_no_permit2() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
 
@@ -220,6 +224,7 @@ fn test_sequential_strategy_cyclic_swap() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     // WETH -> USDC (Pool 2)
@@ -243,6 +248,7 @@ fn test_sequential_strategy_cyclic_swap() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
@@ -316,3 +322,77 @@ fn test_sequential_strategy_cyclic_swap() {
     assert_eq!(hex_calldata[1224..], expected_swaps);
     write_calldata_to_file("test_sequential_strategy_cyclic_swap", hex_calldata.as_str());
 }
+
+#[test]
+fn test_sequential_swap_strategy_encoder_unwrap() {
+    // Note: This test does not assert anything. It is only used to obtain integration
+    // test data for our router solidity test.
+    //
+    // Performs a sequential swap from USDC to ETH through WBTC using USV2 pools and unwrapping in
+    // the end
+    //
+    //   USDC ───(USV2)──> WBTC ───(USV2)──> WETH -> ETH
+
+    let weth = weth();
+    let wbtc = wbtc();
+    let usdc = usdc();
+
+    let swap_usdc_wbtc = Swap {
+        component: ProtocolComponent {
+            id: "0x004375Dff511095CC5A197A54140a24eFEF3A416".to_string(),
+            protocol_system: "uniswap_v2".to_string(),
+            ..Default::default()
+        },
+        token_in: usdc.clone(),
+        token_out: wbtc.clone(),
+        split: 0f64,
+        user_data: None,
+        protocol_state: None,
+        estimated_amount_in: None,
+    };
+    let swap_wbtc_weth = Swap {
+        component: ProtocolComponent {
+            id: "0xBb2b8038a1640196FbE3e38816F3e67Cba72D940".to_string(),
+            protocol_system: "uniswap_v2".to_string(),
+            ..Default::default()
+        },
+        token_in: wbtc.clone(),
+        token_out: weth.clone(),
+        split: 0f64,
+        user_data: None,
+        protocol_state: None,
+        estimated_amount_in: None,
+    };
+    let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
+
+    let solution = Solution {
+        exact_out: false,
+        given_token: usdc,
+        given_amount: BigUint::from_str("3_000_000_000").unwrap(),
+        checked_token: eth(),
+        checked_amount: BigUint::from_str("26173932").unwrap(),
+        sender: Bytes::from_str("0xcd09f75E2BF2A4d11F3AB23f1389FcC1621c0cc2").unwrap(),
+        receiver: Bytes::from_str("0xcd09f75E2BF2A4d11F3AB23f1389FcC1621c0cc2").unwrap(),
+        swaps: vec![swap_usdc_wbtc, swap_wbtc_weth],
+        native_action: Some(NativeAction::Unwrap),
+    };
+
+    let encoded_solution = encoder
+        .encode_solutions(vec![solution.clone()])
+        .unwrap()[0]
+        .clone();
+
+    let calldata = encode_tycho_router_call(
+        eth_chain().id(),
+        encoded_solution,
+        &solution,
+        &UserTransferType::TransferFromPermit2,
+        &eth(),
+        Some(get_signer()),
+    )
+    .unwrap()
+    .data;
+
+    let hex_calldata = encode(&calldata);
+    write_calldata_to_file("test_sequential_swap_strategy_encoder_unwrap", hex_calldata.as_str());
+}

tests/single_strategy_integration_tests.rs

@@ -34,6 +34,7 @@ fn test_single_swap_strategy_encoder() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
@@ -121,6 +122,7 @@ fn test_single_swap_strategy_encoder_no_permit2() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);
 
@@ -204,6 +206,7 @@ fn test_single_swap_strategy_encoder_no_transfer_in() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::None);
 
@@ -288,6 +291,7 @@ fn test_single_swap_strategy_encoder_wrap() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
 
@@ -341,6 +345,7 @@ fn test_single_swap_strategy_encoder_unwrap() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
 

tests/split_strategy_integration_tests.rs

@@ -43,6 +43,7 @@ fn test_split_swap_strategy_encoder() {
         split: 0.5f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_weth_wbtc = Swap {
         component: ProtocolComponent {
@@ -58,6 +59,7 @@ fn test_split_swap_strategy_encoder() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_dai_usdc = Swap {
         component: ProtocolComponent {
@@ -70,6 +72,7 @@ fn test_split_swap_strategy_encoder() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_wbtc_usdc = Swap {
         component: ProtocolComponent {
@@ -82,6 +85,7 @@ fn test_split_swap_strategy_encoder() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
 
@@ -149,6 +153,7 @@ fn test_split_input_cyclic_swap() {
         split: 0.6f64, // 60% of input
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     // USDC -> WETH (Pool 2) - 40% of input (remaining)
@@ -172,6 +177,7 @@ fn test_split_input_cyclic_swap() {
         split: 0f64,
         user_data: None, // Remaining 40%
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     // WETH -> USDC (Pool 2)
@@ -195,6 +201,7 @@ fn test_split_input_cyclic_swap() {
         split: 0.0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);
@@ -316,6 +323,7 @@ fn test_split_output_cyclic_swap() {
         split: 0.0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let swap_weth_usdc_v3_pool1 = Swap {
@@ -336,6 +344,7 @@ fn test_split_output_cyclic_swap() {
         split: 0.6f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let swap_weth_usdc_v3_pool2 = Swap {
@@ -358,6 +367,7 @@ fn test_split_output_cyclic_swap() {
         split: 0.0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
 
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFromPermit2);

tests/uniswap_x_integration_tests.rs

@@ -52,6 +52,7 @@ fn test_sequential_swap_usx() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let swap_usdc_usdt = Swap {
         component: ProtocolComponent {
@@ -70,6 +71,7 @@ fn test_sequential_swap_usx() {
         split: 0f64,
         user_data: None,
         protocol_state: None,
+        estimated_amount_in: None,
     };
     let encoder = get_tycho_router_encoder(UserTransferType::TransferFrom);