Eduardo West contributed to the LayerZero-Labs/devtools repository by expanding the testing coverage for the ONFT721 smart contract example. He developed comprehensive unit tests in Solidity and TypeScript using Foundry and Hardhat, focusing on validating constructor behavior, cross-chain token transfers, and message composition. This work improved the robustness of the ONFT721 contract, which enables cross-chain NFT functionality. By enhancing the reliability and depth of the test suite, Eduardo enabled safer future refactoring and accelerated development cycles. His efforts addressed the need for thorough testing in smart contract development, ensuring higher code quality and maintainability for cross-chain NFT projects.