During November 2024, contributed to the Open-Pix/openpix-developers repository by designing and documenting a Charge Expiration Patch API that enables modification of a charge’s expiration date through a patch operation. The work involved defining the ChargePatchPayload schema in YAML, providing explicit request and response formats, and including practical examples to clarify usage. Leveraging skills in API documentation and OpenAPI Specification, updated the project’s API documentation to accurately reflect patch semantics. This addition laid the foundation for future automation and streamlined expiration management, supporting both customer-facing and internal tooling needs while ensuring clarity and maintainability in the API’s structure and documentation.