ended9월 8일· 1 sources
FastMCP 3 4 migration: the breaking changes that compile
Why it matters
FastMCP 4 is GA. If you have an MCP server or client on fastmcp 3.x, you'll upgrade soon. Most of it is painless — FastMCP(...) , @mcp.tool , and mcp.run(transport=...) are all unchanged. The parts th...
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