Kimi K2 currently failing many tool calls

Forum
1

I tried with Zed as well as opencode. I get these errors for many agent calls, so far that it is unusable:

Failed to call a function. Please adjust your prompt. See 'failed_generation' for more
details.

Anyone else experiencing this?

UPDATE: This error seems to occur very often with new -0905 Kimi release and more seldomly with the old version.

2

I as well encountered this issue.

3

Hi, sorry to hear that you’re running into this issue! What error message are you seeing in the response details? You should be able to see more details as to exactly why it failed to call a function.

4

Had an error again today when using with opencode. Logs from Groq:

{
  "request_id": "req_01k5bmpd8afsw8am3yh06eyb0m",
  "created_at": "2025-09-17T10:49:30.634Z",
  "error": {
    "message": "tool call validation failed: attempted to call tool 'write' which was not in request.tools",
    "type": "invalid_request_error",
    "param": "",
    "code": "tool_use_failed"
  }
}

Can’t reproduce the error currently though.