Tools dont work since yesterday

Questions
,
1

Since yesterday, my previously working AI Agent workflows stopped executing tools. The issue now occurs in all flows using the AI Agent Node, even those I haven’t touched. No tool calls are made — only the OpenAI Chat Model Node runs, while none of the configured tools like the HTTP Request Nodes or Vector Store are triggered.

This happens even though:

  • The input clearly matches conditions defined in the prompt
  • The same input used to work before
  • No changes were made to the logic

The agent simply returns an output without using any tools.

What is the error message (if any)?

There is no visible error. The AI Agent Node returns partial or empty output, and the “tools used in this run” section remains completely blank.

In the execution data:

  • tool_calls array is empty
  • invalid_tool_calls is empty
  • No tool_call_id is used

Information on your n8n setup

  • n8n version: 1.94.1
  • Database: SQLite (default)
  • n8n EXECUTIONS_PROCESS setting: own
  • Running n8n via: cloud
  • Operating system: Windows

:mag_right: Additional Notes

  • All tool nodes are correctly registered and connected
  • This applies to all flows — even previously functional ones
  • No changes to prompt or node configuration were made
  • Problem started suddenly — likely since the update to 1.94.x

image
image1516×537 77.3 KB

2

Hello @Alen95!

from what you say it looks like the tool update caused a problem.
Maybe try switching to version 1.95.X even if in Beta to see if the problem is solved.

3

Thank you for the response.

How you mean? Downgrade to the older Version? How?

I just Upgrade because of the Problem, i tought it would solve it but its Not getting better.

4

My suggestion is to upgrade to the next beta version. To see if it can solve your problem.

5

Can you try recreating the workflow ore a test one in a new workflow.

6

i did. same issue. like i wrote, my other flow, which i didnt touch, has the same problem…

7

Oh, my bad. I was thinking maybe if creating a new ai agent from the node list would work. Have had some interesting issues with the AI agent myself.

I dont think updating it would fix the issue as the changelog dosen’t mention anything about your issue.

But downgrading may work.

8

hmm but like i said, i upgraded it because of the issue…

how i can downgrade in the cloud?

9

What version did you have yesterday when this issue started? Also I just realized you can’t downgrade on cloud. So that’s that…

But your issue is quite interesting. Haven’t found anything similar on the forum nor any opened issue on github.

Can you try changing the AI model to another provider like mistral to see if that changes something.

10

I’ve always had this issue (started self-hosting on 1.94.1) and it’s causing subsequent executions to ignore instructions to use tools, which I haven’t found a consistent way to prompt around.

It’s happening with a POstgres node. Anyone else seeing this?