Minimal modern OAuth 2.1 stack #2296
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- OAuth tokens = Access Token that belongs to an OAuth client - One table (oauth_clients) + one column (oauth_client_id) - Stateless authorization codes via MessageEncryptor (60s TTL) - Implicit grants (token exists = grant, revoke = delete tokens) - Dynamic client registration for MCPs - Token lifetime: no expiry, explicit revocation only - Scope mapping: space-delimited OAuth scopes → permission enum - Security: PKCE required, loopback-only DCR, rate limiting - RFC compliance: 6749, 6750, 7636, 7591, 8252, 8414, 9728 Authorization flow with PKCE (S256 only) - Consent screen showing client name and requested scopes - Stateless authorization codes via MessageEncryptor Token endpoint - Authorization code exchange with PKCE verification - Issues Identity::AccessToken linked to OAuth client Revocation endpoint (RFC 7009) - Revoke access tokens by value - Always returns 200 per spec
Discovery endpoints (RFC 8414): - /.well-known/oauth-authorization-server - /.well-known/oauth-protected-resource Dynamic Client Registration (RFC 7591): - POST /oauth/clients for MCP clients - Loopback redirects only (127.0.0.1, localhost, [::1]) - Rate limited to 10 requests/minute
View and revoke OAuth client access at /my/connected_apps. Scoped through identity's OAuth tokens for proper authorization. Links from access tokens index for discoverability.
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No refresh tokens; no token expiry; only implicit grants; only authorization code exchange.
Needs design: Authorization
Needs design: Connected Apps