FastMCP Forge (Lite Edition)

FastMCP Forge is an ergonomic framework and CLI scaffolding engine that enables Python developers to build, test, and package compliant Model Context Protocol (MCP) servers in seconds.

⚡ The Problem: MCP Boilerplate Burnout

In 2026, every AI developer is building MCP servers to connect tools to Claude Desktop, Cursor, Windsurf, and Antigravity. However, writing raw JSON-RPC 2.0 handlers from scratch requires:

• Manually parsing JSON schemas for tool arguments.

• Handling error codes (-32600, -32601, -32602, -32000).

• Managing sys.stdin and sys.stdout stream buffers.

• Writing test harnesses to mock agent tool invocations.

FastMCP Forge gives you an intuitive @app.tool decorator that introspects function signatures, infers types, generates valid schemas, and creates automated test suites instantly.

Related MCP server: mcpserve

🛠️ Code Example: Build an MCP Server in 10 Lines

from fastmcp_forge.server import FastMCP

app = FastMCP(name="math-mcp", version="1.0.0")

@app.tool(description="Multiply two numbers safely")
def multiply(a: float, b: float) -> float:
    return a * b

if __name__ == "__main__":
    app.run_stdio()

🚀 CLI Project Scaffolder

Generate a full production-ready project with tests in 1 second:

python -m fastmcp_forge.cli new analytics-mcp

Output:

[OK] Created new FastMCP project 'analytics-mcp'
Generated files:
  - server.py
  - tests/test_server.py
  - README.md
  - requirements.txt

🖥️ Client Configuration

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "my-server": {
      "command": "python",
      "args": ["server.py"],
      "cwd": "/path/to/my-server"
    }
  }
}

💎 Need Enterprise Remote Deployment? Upgrade to FastMCP Forge Pro

Deploying MCP servers as remote team microservices, behind authentication proxies, or in production clouds?

👉 Get FastMCP Forge Pro on Gumroad ($14.99)

📄 License

MIT License. See LICENSE for details.