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Token endpoint

As explained in Secure APIs

A token endpoint is an authorization server endpoint that exchanges an authorization grant for an access token.

A token endpoint is an authorization server endpoint that exchanges an authorization code for an access token. Its URL appears in the discovery endpoint response. section 8.4.1

For the authorization code flow, the request includes:

  • grant_type=authorization_code section 8.4.1
  • The client ID, client secret, authorization code, and the same redirect URI used in the authorization request. section 8.4.1
  • A POST request using the application/x-www-form-urlencoded MIME type. section 8.4.1

FastAPI exchange endpoint

A FastAPI GET /token endpoint accepts the returned code, builds the required form payload, posts it to Auth0’s https://apithreats.eu.auth0.com/oauth/token endpoint, and returns the response containing the access token.

How Secure APIs covers it

How deep it goes
Explains the endpoint’s role, discovery, required parameters, encoding, and a focused FastAPI implementation.
Examples
Uses an Auth0 token URL, a FastAPI GET /token endpoint, form-encoded parameters, and interactive API documentation.
What it assumes
Assumes an authorization code has been returned and that client credentials and a matching redirect URI are available.
What you can do after
Apply it via FastAPI and requests to exchange an authorization code for an access token.
How it connects
Connects authorization codes, access tokens, authorization code flow, discovery endpoints, authorization endpoints, and redirect URIs.
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This explainer was generated by Manning's knowledge graph from the text of Secure APIs. The section links point to the parts of the book it draws on.