FastMCP.as_proxy loses tool title #2496
Description
Description
When using FastMCP.as_proxy(), the title parameter of tools is set to None instead of preserving the original value.
>>> await mcp.get_tools()
# {'name': FunctionTool(name='name', title='title', description=None, tags=set(), enabled=True)}
>>> await FastMCP.as_proxy(mcp).get_tools()
# {'name': ProxyTool(name='name', title=None, description=None, tags=set(), enabled=True)}Example Code
# /// script
# requires-python = ">=3.14"
# dependencies = [
# "fastmcp==2.13.1",
# ]
# ///
from anyio import run
from fastmcp import FastMCP
mcp = FastMCP()
@mcp.tool("name", title="title")
def _(): ...
@run
async def _():
print(await mcp.get_tools())
print(await FastMCP.as_proxy(mcp).get_tools())Version Information
FastMCP version: 2.13.1
MCP version: 1.22.0
Python version: 3.14.0
Platform: Windows-11-10.0.26200-SP0
FastMCP root path: D:\dev\deep-search\.venv\Lib\site-packages