# Flask OAuth Providers

Authlib has built-in Flask integrations for building OAuth 1.0, OAuth 2.0 and OpenID Connect servers. It is best if developers can read Introduce OAuth 1.0 and Introduce OAuth 2.0 at first.

- Flask OAuth 1.0 Server
  - Authorization Server
  - Resource Servers
  - Customize Signature Methods
  - API References of Flask OAuth 1.0 Server
- Flask OAuth 2.0 Server
  - Authorization Server
  - Register Grants
  - Token Endpoints
  - Resource Server
  - Flask OIDC Provider
  - API References of Flask OAuth 2.0 Server