todo-list-mcp-server

The server demonstrates a strong commitment to security with robust measures implemented. Key strengths include: comprehensive Zod validation for all tool inputs, preventing common vulnerabilities like injection and data type mismatches; use of parameterized queries with Neon preventing SQL injection; JWKS-based JWT token signature verification for authentication, with a defined fallback mechanism; explicit file permissions (0o600) for the stored token file; hardened Express session configuration (secure, httpOnly, sameSite: 'strict', resave: false, saveUninitialized: false); and implementation of global error handlers to prevent unexpected crashes and information leakage. User isolation is maintained by filtering database queries by user_id from the authenticated token. There are no evident uses of `eval` or similar dangerous functions. The `docs/improvements.md` details numerous security fixes already applied, indicating active security awareness.