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* feat(mcp): add OAuth 2.1 authentication for claude.ai MCP connector Enable OAuth 2.1 (RFC 8414 + RFC 7591) for the MCP endpoint using better-auth's MCP plugin. This allows claude.ai and other MCP clients to authenticate via Dynamic Client Registration and Authorization Code flow with PKCE, using the existing login page. - Add `mcp()` plugin to better-auth config with login page redirect - Add `.well-known/oauth-authorization-server` discovery endpoint - Add `.well-known/oauth-protected-resource` metadata endpoint - Update MCP handler to accept Bearer tokens via `getMcpSession` - Retain `x-api-key` fallback for backward compatibility - Return proper HTTP 401 + WWW-Authenticate header for unauthed requests - Add `oauthApplication`, `oauthAccessToken`, `oauthConsent` tables Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(mcp): use typed AuthError and suppress noisy verifyApiKey throws - Replace string-matching error detection with instanceof AuthError - Wrap verifyApiKey in try-catch to avoid logging malformed key errors - Move console.error below auth check so 401s don't pollute logs Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * feat(mcp): add database migration for OAuth tables Creates oauth_application, oauth_access_token, and oauth_consent tables required for MCP OAuth 2.1 Dynamic Client Registration flow. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(mcp): resolve OAuth Bearer token auth for oRPC tool calls The oRPC context only checked session cookies and API keys, causing MCP tool calls from OAuth clients (claude.ai) to fail with Unauthorized even though the MCP endpoint itself authenticated successfully. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(mcp): look up user by userId from OAuth access token getMcpSession returns OAuthAccessToken (with userId), not a session object with a user property. Must query the user table by userId. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * refactor(mcp): migrate from deprecated mcp() plugin to @better-auth/oauth-provider The better-auth MCP plugin is marked for deprecation in favor of the OAuth Provider plugin. This refactors the entire OAuth 2.1 flow to use @better-auth/oauth-provider with JWT-based token verification, replacing the opaque token lookup via getMcpSession(). Key changes: - Replace mcp() with jwt() + oauthProvider() in auth config - Replace getMcpSession() with verifyAccessToken() (JWT/JWKS) - Replace oauthApplication table with oauthClient (RFC 7591 compliant) - Add oauthRefreshToken table and jwks table for JWT signing keys - Extract shared authBaseUrl and verifyOAuthToken helper - Hoist McpServer to module scope (avoid per-request reconstruction) - Update .well-known discovery endpoints for OAuth Provider Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(mcp): resolve OAuth 2.1 flow for claude.ai MCP connector Multiple fixes required to make the full MCP OAuth flow work with claude.ai's implementation: - Add RFC 8414 discovery route at /.well-known/oauth-authorization-server/api/auth (claude.ai appends the issuer path per spec) - Add /auth/oauth server route to handle login/consent flow (generates auth codes directly, bypassing h3 cookie issues) - Default token_endpoint_auth_method to "none" via onRequest plugin hook (claude.ai omits this field, causing confidential client rejection) - Strip prompt=consent from authorize requests via onRequest hook (better-auth checks prompt before skipConsent, causing redirect loops) - Add validAudiences for MCP resource URL (JWT aud claim contains the MCP URL, not the base URL) - Disable CSRF check for cross-origin OAuth flows - Log token endpoint errors for debugging - Set skipConsent on OAuth clients via /auth/oauth route Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * fix(mcp): harden OAuth security and enforce lock on delete - Scope CSRF bypass to OAuth2 paths only instead of disabling globally - Validate redirect_uri against registered client URIs (prevents code interception) - Use pathname matching instead of fragile url.includes() for route guards - Replace biased modulo code generation with crypto.randomBytes - Enforce resume lock check on delete (previously silently ignored) - Remove debug console.error logging of OAuth token response bodies - Use Response.json() consistently for MCP 401 response Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * Update dependencies, refine ignore patterns, and enhance documentation - Updated various dependencies in package.json and pnpm-lock.yaml for improved stability and features. - Adjusted ignore patterns in knip.json to include specific component directories. - Enhanced documentation for the MCP server, clarifying authentication methods and configuration options. - Made minor adjustments to VSCode settings for better code organization. * fix(mcp): resolve OAuth client registration and stale token handling Claude.ai sends token_endpoint_auth_method: "client_secret_post" without a client_secret during Dynamic Client Registration, causing Better Auth to reject it as an unauthenticated confidential client. Force to "none" for unauthenticated registrations. Also catch JWKS verification errors (e.g. key rotation after redeployment) so stale Bearer tokens return 401 instead of 200 with an error body, allowing clients to re-initiate the OAuth flow. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com> * reiterate on tests --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com> Co-authored-by: Amruth Pillai <im.amruth@gmail.com>