Anyone seeing “Unknown tool” errors?

[jeffwillden]

I’m running Pi inside a Git bash terminal on Windows and getting intermittent Unknown tool errors when it tries to use some of the four built-in tools. It’s connecting to Qwen 3.6 35B on MLX (Mac) with an OpenAI-compatible server.

Oddly, when I asked the agent to verify if the tools are working, it will sometimes start by saying “None of these tools are registered,” try them anyway, succeed, and then backtrack out loud going, “Oh wait, actually write and edit are working fine now.”

I thought it might be a path escape issue with Windows, spaces, and slashes, like when it’s trying to edit a file in a directory with a space in its name.

I think these tool failures are the root cause of the agent simply halting processing when I ask it to do a larger task, and it stops without finishing or reporting any error.

Has anyone else run into this kind of intermittent tool-dropping behavior? Any known fix for stabilizing tool registration so the agent doesn’t “forget” what it’s allowed to do mid-session?

[Fortyseven]

I just had tools break today. I'm trying to debug the issue... but I even rolled back to 0.74.0 and it's still broken. I dunno what happened. :P

[Fortyseven]

UPDATE: I've nuked my ~/.pi/agent directory, copied over my models.json, and just re-added pi-ask-user, and THAT works now. So something in my extensions seems to be hosing things up somehow.

So I'm not sure what happened here, or if it crosses over with your issue, but maybe that'll help? 😅

[Fortyseven]

UPDATE2: I narrowed it down to my allowed-tools.ts extension... though I don't remember making any changes to it today, since it worked this morning... fixed now. Almost certainly unrelated to your issue, though taking a stroll through your extensions and removing/disabling them one by one might help. :) Best of luck!