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fastmcp.cli.cli

FastMCP CLI tools using Cyclopts.

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Functions

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version 

version()
Display version information and platform details.

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dev 

dev(server_spec: str) -> None
Run an MCP server with the MCP Inspector for development. Args:
  • server_spec: Python file to run, optionally with :object suffix

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run 

run(server_spec: str, *server_args: str) -> None
Run an MCP server or connect to a remote one. The server can be specified in four ways:
  1. Module approach: “server.py” - runs the module directly, looking for an object named ‘mcp’, ‘server’, or ‘app’
  2. Import approach: “server.py:app” - imports and runs the specified server object
  3. URL approach: “http://server-url” - connects to a remote server and creates a proxy
  4. MCPConfig file: “mcp.json” - runs as a proxy server for the MCP Servers in the MCPConfig file
Server arguments can be passed after — : fastmcp run server.py — —config config.json —debug Args:
  • server_spec: Python file, object specification (file:obj), MCPConfig file, or URL

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inspect 

inspect(server_spec: str) -> None
Inspect an MCP server and generate a JSON report. This command analyzes an MCP server and generates a comprehensive JSON report containing information about the server’s name, instructions, version, tools, prompts, resources, templates, and capabilities. Examples: fastmcp inspect server.py fastmcp inspect server.py -o report.json fastmcp inspect server.py:mcp -o analysis.json fastmcp inspect path/to/server.py:app -o /tmp/server-info.json Args:
  • server_spec: Python file to inspect, optionally with :object suffix