OpenAI OpenAPI

openai-openapi is the official OpenAPI specification for the OpenAI API, maintained by OpenAI to provide a standardized, machine-readable contract for all supported endpoints. The repository ensures that developers and toolchains can integrate with OpenAI services using a consistent schema across SDKs, code generators, and API clients. It contains both an automatically documented version of the spec and a manually updated branch for reference. Developers can use this specification to generate client libraries, validate requests and responses, or explore the API structure in compatible tools. The project is actively maintained with tagged releases, issues, and contributions from multiple collaborators. Its goal is to improve transparency, developer experience, and interoperability when building applications powered by OpenAI’s models.