Spec.openapis.org
Home | OpenAPI Initiative Publications
Browse official OpenAPI specifications and extension registries, with easy access to authoritative HTML docs and schemas for API standards.
View official OpenAPI specs and registries
OpenAPI Initiative Publications is your go-to resource for the official HTML versions of the OpenAPI specifications and related extension registries. Here, you can easily access up-to-date documentation, schemas, and registry information that support the OpenAPI standard.
Whether you're developing APIs, building tools, or working on integrations, this site helps you find authoritative references for the latest and past OpenAPI specs. You’ll also discover registries for formats, extensions, namespaces, and more—all in one place for convenience and reliability.
Designed for developers, technical writers, and anyone working with API standards, the site keeps things straightforward and transparent. You get direct links to specs, draft features, and official schemas, making it easy to stay aligned with the evolving OpenAPI ecosystem.
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