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Remove FastMCPProxy client parameter (deprecated 2.10.3) #2182

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Remove FastMCPProxy client parameter (deprecated 2.10.3)#2182
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breaking changeBreaks backward compatibility. Requires minor version bump. Critical for maintainer attention.clientRelated to the FastMCP client SDK or client-side functionality.serverRelated to FastMCP server implementation or server-side functionality.
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2.14
@jlowin

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@jlowin
jlowin
opened on Oct 21, 2025

Remove the deprecated client parameter from FastMCPProxy constructor.

Deprecated in: 2.10.3
Migration: Use client_factory parameter instead for explicit session management

Files affected:

  • src/fastmcp/server/proxy.py

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    breaking changeBreaks backward compatibility. Requires minor version bump. Critical for maintainer attention.clientRelated to the FastMCP client SDK or client-side functionality.serverRelated to FastMCP server implementation or server-side functionality.

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