mcp-server-go

The server demonstrates robust security practices, particularly concerning filesystem access. It employs multiple layers of path validation, including `filepath.Abs`, `filepath.EvalSymlinks`, `path.Clean`, and custom `ensureInsideRoot` logic, to prevent directory traversal and symlink-based escape attacks. All file manipulation tools (`fs.read`, `fs.write`, `fs.append`, `fs.move`, `fs.delete`) rigorously enforce this sandboxing. For network communication, the `streaminghttp` transport integrates a pluggable `auth.Authenticator` to handle OIDC/JWT-based bearer token authentication, including proper `WWW-Authenticate` challenges and error responses. It explicitly rejects JSON-RPC batch requests, a good security practice. Session management via `SessionHost` includes `TTL` and `MaxLifetime` for lifecycle control and uses Redis's optimistic locking for concurrent updates. No 'eval' or similar dangerous dynamic code execution patterns were identified, and sensitive configurations like `REDIS_ADDR` are expected from environment variables.