APIs.guru / API providers in the OpenAPI directory

Lists every provider in the APIs.guru OpenAPI directory, the community directory of public web API definitions: one domain per provider, e.g. stripe.com or googleapis.com (677 on 2026-11-09). Pass one of them to developer.api.provider for its APIs and spec links. No input. Licence: definitions contributed to the directory by API authors are CC0 1.0; definitions copied from public sources are used under fair use (https://github.com/APIs-guru/openapi-directory#licenses).