fastmcp

The fast, Pythonic way to build MCP servers and clients. Lets developers define tools, resources, and prompts with simple decorators and deploy them instantly as MCP-compatible servers any agent can call.

Connects to: Python, Claude Desktop, Cursor, Any MCP client · · Apache-2.0 25,977★

Use it with an AI agent

Loadbay is an MCP server, so an agent can search the catalog and find this harness:

claude mcp add --transport http loadbay https://loadbay.xyz/api/mcp

• Source: https://github.com/PrefectHQ/fastmcp
• This harness as JSON: /api/harnesses/fastmcp
• Agent setup: /setup.md
• Browse all 700+ harnesses on Loadbay