Claudia Barceló Valdés developed robust features across two repositories, focusing on reliability and maintainability. For LayerZero-Labs/devtools, she engineered an RPC health check with configurable retry logic and a continue option, enhancing network observability and reducing manual intervention during transient failures. Her approach leveraged Node.js, TypeScript, and CLI development to align tooling with devops needs. In ethereum-optimism/ethereum-optimismhub.io.git, Claudia integrated comprehensive USD₮0 token data and streamlined the superchain configuration by removing non-core chains, improving data integrity and reducing maintenance. Her work demonstrated thoughtful data management and careful attention to traceability, contributing to more resilient and auditable systems.