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FastMCP

The fast, Pythonic way to build MCP servers.

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Open-source Python framework for building and deploying Model Context Protocol (MCP) servers and clients.

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workflowSECONDARY2026-05-02

Practitioners report harness playbooks with Playwright CLI, create_agent, and MCP

Builders shared concrete Symphony, create_agent, and MCP setup guides after arguing that model switching is easy but harness switching is not. The playbooks matter because they make harness engineering more repeatable, so teams can copy tested tooling and integration patterns.