A6-Tango-MCP

The server demonstrates a high level of security awareness and implementation. It includes robust input sanitization (stripping control characters, trimming), comprehensive authentication (OAuth with domain restrictions, cryptographically secure MCP tokens with hashing, usage tracking, and revocation capabilities), strong access control (requiring @agile6.com emails for OAuth), and CSRF protection for OAuth flows. Secrets (API keys, OAuth client secrets, cookie encryption keys) are correctly managed as Cloudflare Worker secrets and are not exposed. Rate limiting is implemented across different endpoint types to prevent abuse. Detailed audit logging captures security-relevant events. No 'eval' or other obvious malicious dynamic code execution patterns were detected. The architecture leverages Cloudflare Workers' inherent security benefits. Minor areas for improvement might involve more aggressive input validation (e.g., regex for all string parameters) beyond just sanitization, but overall, it's very well-secured.