feat: add OAuth2 protected resource metadata endpoint for RFC 9728 #18643
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This was referenced Jun 27, 2025
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- Add OAuth2ProtectedResourceMetadata struct in codersdk/oauth2.go - Implement /.well-known/oauth-protected-resource endpoint handler - Register route in coderd.go for Protected Resource Metadata discovery - Add comprehensive test coverage in oauth2_metadata_test.go - Update OpenAPI documentation and generated API types - Correctly omit bearer_methods_supported field (Coder uses custom auth) - Support MCP OAuth2 compliance requirement for resource server metadata This implements RFC 9728 OAuth 2.0 Protected Resource Metadata to enable MCP clients to discover resource server capabilities and authorization servers. Change-Id: I089232ae755acf13eb0a7be46944c9eeaaafb75b Signed-off-by: Thomas Kosiewski <tk@coder.com>
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Add OAuth2 Protected Resource Metadata Endpoint
This PR implements the OAuth2 Protected Resource Metadata endpoint according to RFC 9728. The endpoint is available at
/.well-known/oauth-protected-resourceand provides information about Coder as an OAuth2 protected resource.Key changes:
/.well-known/oauth-protected-resourcethat returns metadata about Coder as an OAuth2 protected resourceOAuth2ProtectedResourceMetadatastruct in the SDKThe implementation currently returns basic metadata including the resource identifier and authorization server URL. The
scopes_supportedfield is empty until a scope system based on RBAC permissions is implemented. Thebearer_methods_supportedfield is omitted as Coder uses custom authentication methods rather than standard RFC 6750 bearer tokens.A TODO has been added to implement RFC 6750 bearer token support in the future.