Hello Retool team,
I have a very annoying issue on one agent on a customer instance.
All the custom tools that were functional in one Agent, suddenly got broken.
They get called by the agent properly but the function that was inside is not found anymore:
Indeed, in the tool editor, that part simply doesnโt exist anymore (the "function logicโ block):
As you can see, that block is visible in a new custom tool:
What happened? Can I recover my custom tool settings?
Thanks
ChiEn
February 21, 2026, 4:42am
3
Hey @abusedmedia , thanks for reporting this! Could you try reverting to an earlier version of the agent and see if that brings the tools back? That helped in a similar case mentioned in this thread. Let me know what you see after trying that!
Hey all, a few updates here. We think we've resolved the source of this issue. In our internal repros, reverting to an earlier version of the agent has brought the tools back. Could anyone still running into this issue give that a shot?
[Screenshot 2025-07-25 at 10.32.39 AM]
Hi @ChiEn
getting back to prev version brings to a working one but unfortunately I did a lot of changes in the tools so I lost a lot of config.
Now I recreated it from scratch, but the fact that suddenly all tools get broken with no apparent reason and no action, scare me a lot.
Thanks
ChiEn
February 26, 2026, 8:57pm
5
Hey @abusedmedia , sorry to hear that! Do you still have that agent? If so, could you share the JSON file so we can investigate further? Thank you!!