"""
ZTA Paradigm based MCP Server Authentication Setup
1. OAuth2
- Set environment variable
OAUTH2_SECRET_KEY. - Send token in
Authorization: Bearer <token>header.
2. Certificate-based Auth
- Send client certificate via
X-Client-Certheader (for mock testing). - For production, integrate with mTLS.
3. API Key Auth
- Set env
VALID_API_KEYS(comma-separated keys). - Send
X-API-Key: <your_key>in the header. """