middleware

fastmcp.server.auth.middleware

Enhanced authentication middleware with better error messages.

This module provides enhanced versions of MCP SDK authentication middleware that return more helpful error messages for developers troubleshooting authentication issues.

Classes

RequireAuthMiddleware

Enhanced authentication middleware with detailed error messages.

Extends the SDK’s RequireAuthMiddleware to provide more actionable error messages when authentication fails. This helps developers understand what went wrong and how to fix it.