About APIs.guru
APIs.guru is a free, public directory of REST API descriptions written in the OpenAPI 3.0 format. It is often described as a Wikipedia for web APIs.
What it does
The site lists public APIs with their OpenAPI definitions, so developers can look up an API and read its endpoints, parameters and responses. The definitions are kept in a public GitHub repository, where contributors can add or update them. Visitors can also submit a new API to the directory through the site.
Key features
- Browse REST API definitions in OpenAPI 3.0 format
- Spec files kept in a public GitHub repository
- Submit a new API to the directory
- Spec files released under the CC0 license
Who it's for
Developers who need an API description for code generation, client libraries or testing. It is also useful for anyone who wants to see how public APIs are documented in practice.
Pricing and good to know
The directory is free to browse. The repository is released under CC0, which places the content in the public domain to the extent the law allows. Entries are maintained by contributors, so check each definition against the provider's own documentation before relying on it.
Highlights
- Browse REST API definitions in OpenAPI 3.0 format
- Spec files kept in a public GitHub repository
- Submit a new API to the directory
- Spec files released under the CC0 license
