Worked on stabilizing grant validation pipelines in the burnt-labs/xion.js repository by addressing a legacy validation failure that emerged during the transition from REST to ABCI. Focused on aligning the decoding of ABCI grants with the REST API JSON format, which restored compatibility between fetchChainGrantsABCI and legacy validation paths for bank and stake grants. Utilized TypeScript and backend development skills to resolve a format mismatch that had caused production poll errors, improving the reliability of grant checks. Demonstrated proficiency in API development and protobuf decoding, enhancing both the testability and traceability of grant-validation changes within the codebase.