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fastmcp-3-0-breaking-changes-from-2-14-x-on-duplicate-tools

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FastMCP 3.0 breaking changes from 2.14.x:

FastMCP 3.0 breaking changes from 2.14.x: on_duplicate_tools renamed to on_duplicate, mcp>=1.26.0 <2 still needed, Python submodule name collision with init.py variables.

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