Worked on the marqo-ai/marqo repository to enhance API documentation stability by addressing serialization compatibility issues affecting OpenAPI and SwaggerUI. Focused on refining the AddDocsBodyParams.documents type, ensuring that only JSON-serializable documents are accepted, which resolved previous incompatibilities with documentation tools. Utilized Python, Pydantic, and OpenAPI standards to implement these changes, and added comprehensive end-to-end tests to verify the continued accessibility of the /docs and /openapi.json endpoints. This work improved the reliability and accuracy of the API documentation, supporting a smoother developer experience and reducing the risk of future regressions related to serialization or documentation accessibility.