FastMCP 3.3 introduces fastmcp-slim, a dependency-light distribution for users who want the FastMCP client without installing the full server framework.
The import namespace stays the same: client-only consumers can install fastmcp-slim[client] and continue writing ordinary FastMCP client code:
from fastmcp import Client
client = Client("https://example.com/mcp")Please note: the FastMCP 3.3.0 betas are being released for testing the new packages, and should not be used for any other purpose.