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26 lines
796 B
Text
26 lines
796 B
Text
---
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title: middleware
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sidebarTitle: middleware
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---
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# `fastmcp.server.auth.middleware`
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Enhanced authentication middleware with better error messages.
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This module provides enhanced versions of MCP SDK authentication middleware
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that return more helpful error messages for developers troubleshooting
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authentication issues.
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## Classes
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### `RequireAuthMiddleware` <sup><a href="https://github.com/jlowin/fastmcp/blob/main/src/fastmcp/server/auth/middleware.py#L22" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>
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Enhanced authentication middleware with detailed error messages.
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Extends the SDK's RequireAuthMiddleware to provide more actionable
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error messages when authentication fails. This helps developers
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understand what went wrong and how to fix it.
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