mcp-server

The server demonstrates good security practices by implementing OAuth 2.0 with PKCE, validating user tokens against a Supabase `oauth_apps` table using a service role key, and enforcing user data isolation via `user_id` in database queries. It also properly handles authentication errors with `WWW-Authenticate` headers. A noteworthy workaround is employed using an `X-OAuth-Token` custom header when proxying to Supabase Edge Functions to bypass Supabase's platform-level JWT validation, which is a known issue for non-JWT OAuth tokens. While CORS `origin: '*'` is used, which is acceptable for platform integrations, a tighter restriction could be considered for a strictly defined production environment. No hardcoded sensitive API keys or dangerous functions like `eval` were found.