MCP_server

The server demonstrates an exceptionally strong focus on security. It implements a multi-layered defense-in-depth architecture covering authentication (JWT, bcrypt), fine-grained authorization (RBAC with explicit permissions and wildcard matching), input validation (JSON Schema), and extensive sandboxing. Code execution is isolated in subprocesses with restricted Python namespaces (blocking dangerous imports/builtins like 'os', 'sys', 'eval'), resource quotas, and dedicated client directories to prevent path traversal and cross-client access. All significant operations are meticulously logged to an append-only audit trail. The use of a default 'changeme' JWT secret is noted as a development fallback but actively encourages environment variable usage for production.