mcp-handler

The code correctly handles proxy headers (X-Forwarded-Host, X-Forwarded-Proto, Forwarded) to prevent URL spoofing and ensure accurate public-facing URLs. It implements Bearer token authentication following MCP Authorization Specification, including checks for required tokens, scopes, and token expiration, and returns appropriate WWW-Authenticate headers. Explicit CORS headers are set for OAuth metadata endpoints. For Server-Sent Events (SSE), it integrates with Redis for messaging, relying on secure external configuration of the Redis URL via environment variables. Comprehensive cleanup logic for SSE connections helps prevent resource leaks and potential denial-of-service issues. No instances of 'eval', code obfuscation, hardcoded secrets, or overtly malicious patterns were identified. Security heavily depends on the secure configuration of its host environment (e.g., Next.js/Nuxt) and Redis.