Quickstart

Deploy a FastMCP server from GitHub to a protected URL like https://weather-mcp.fastmcp.app/mcp. Every successful build from your default branch redeploys it.

Create a server

Create a project with uv:

uv init --app --no-package --python 3.12 weather-mcp
cd weather-mcp
uv add fastmcp

Replace main.py with:

main.py

from fastmcp import FastMCP

mcp = FastMCP("Weather MCP")


@mcp.tool
def get_weather(city: str) -> str:
    """Get current weather for a city."""
    return f"It is always sunny in {city}."


if __name__ == "__main__":
    mcp.run()

Check that it loads. You should see the get_weather tool:

uv run fastmcp inspect main.py:mcp --format fastmcp

Push the project to a GitHub repository. For entrypoint and dependency details, see Build system.

Deploy on FastMCP Gateway

Connect GitHub and choose a repository

Authorize the GitHub App, grant it access to your repository, and select it. See GitHub for details.

Configure the server

Name the server (this sets its {name}.fastmcp.app URL) and set the entrypoint to main.py:mcp. Optionally add environment variables.

Deploy

Create the server and watch the build logs. When the build succeeds, the server deploys to its URL.

Confirm it is live

Open the server’s Deployments page. Once the status reads Live, your server is serving at the URL shown there. FastMCP Gateway authentication is on by default, so callers must authenticate. To change that, see Authentication. Next, connect a client.

Get Started

Platform

MCP Servers

Access

Administration

Security & Compliance

Plans & Billing

Reference

Create a server

Deploy on FastMCP Gateway

Confirm it is live

​Create a server

​Deploy on FastMCP Gateway

​Confirm it is live

Create a server

Deploy on FastMCP Gateway

Confirm it is live