Set longer request times for Inspector client

[luiztauffer]

Describe the bug
I get Error: Request timed out whenever I send requests to tools that take a little bit longer to process.

To Reproduce
Just use any MCP tool that takes a longer time to finish, e.g.

from time import sleep
from mcp.server.fastmcp import FastMCP

mcp = FastMCP("myserver", version="0.1.0", request_timeout=300)

@mcp.tool()
def return_string(query: str) -> str:
    sleep(10)
    return f"Query: {query}"

then run it with:

mcp dev main.py

Expected behavior
I would expect the client to wait for the response up to a limit, but I don't know how to set that limit in the Inspector.

[kwnath]

Not sure if this is a bug but the default request timeout is 10s (https://github.com/modelcontextprotocol/inspector/blob/master/client/src/lib/hooks/useConnection.ts#L23) which is why you're running into the error you've attached.

You've got a few options here:

1. If you're running this locally I'd suggest just increasing the timeout to whatever you feel makes sense.
2. The alternative is open a PR to increase the timeout but I think 10s is pretty sensible.

The former probably makes more sense for you 😄

[luiztauffer]

hi @kwnath yeah I agree this is not a bug, the tag came automatically I don't know why
thank you for the suggestions! Yes I know I could just change that constant and run it from source, but I think it would be useful to have it as a configuration option directly in the UI, since many MCPs that do a bit heavier processing will certainly require a longer time.
If you think this is an useful feature I can leave this Issue open, if there's no interest in doing that modification I can close it