# Pocket ID > Pocket ID is the most user-friendly OpenID Connect Certified™ and OAuth 2.0 provider that lets users sign in to your applications with passkeys. ## Documentation Sets - [Abridged documentation](https://pocket-id.org/llms-small.txt): a compact version of the documentation for Pocket ID, with non-essential content removed - [Complete documentation](https://pocket-id.org/llms-full.txt): the full documentation for Pocket ID ## Notes - The complete documentation includes all content from the official documentation - The content is automatically generated from the same source as the official documentation ## Optional - [OpenAPI spec](https://pocket-id.org/swagger.json): every route of the Pocket ID REST API with its parameters and schemas