PrefectHQ/fastmcp

🚀 The fast, Pythonic way to build MCP servers and clients.

What it solves

FastMCP 簡化了使用 Model Context Protocol (MCP) 構建應用程式的流程，該協定將大型語言模型 (LLM) 與外部工具與數據連結起來。它消除了手動處理協定生命週期、傳輸協商、身分驗證與架構生成之複雜性，讓開發者能專注於核心邏輯。

How it works

FastMCP 提供了一個框架，可將 Python 函數包裝成符合 MCP 規範的工具、資源與提示詞。它會自動生成這些工具所需的架構、驗證與文件。該框架由三個主要組件組成：

  • Servers: Expose tools and data to LLMs.
  • Clients: Connect to local or remote MCP servers.
  • Apps: Provide interactive UIs that render directly within the conversation.

Who it’s for

想要快速構建與部署 MCP 伺服器與用戶端，並在無需實作 Model Context Protocol 底層細節的情況下，從原型開發轉向生產環境的開發者。

Highlights

  • Automatic Schema Generation: Automatically creates schemas and validation for Python functions declared as tools.
  • Full Protocol Support: Manages transport negotiation and authentication for both clients and servers.
  • Integrated UI: Ability to create interactive UIs for tools via the Apps component.
  • Broad Adoption: Incorporated into the official MCP Python SDK and powers a significant portion of MCP servers.