I have implemented a tool call in Vapi, and returning the following response in case of success and Failure: If TOOL CALL returns success I am sending the following response: result = result_object.get('message', 'Attorney listing request created successfully') tool_response = { "toolCallId": tool_id, "result": result, } ELSE: result = result_object.get('message', 'Failed to create attorney listing request') tool_response = { "toolCallId": tool_id, "error": result, } My API is returning the following response: {'success' : False, 'message' : "Invalid legal problem: Civil Hearing" } Dashboard is showing the following: { "name": "cs_find_attorney_listing", "role": "tool_call_result", "time": 1775085830532, "result": "Invalid legal problem: Civil Hearing", "metadata": {}, "toolCallId": "call_JIdBU918nG7M5z7w7a5BVlVc", "secondsFromStart": 57.701 }

To fix the error display in the Vapi dashboard, always wrap your tool call response in a

results

array, even for errors. Here’s the correct format for an error response:

python
return {
    "results": [
        {
            "toolCallId": tool_id,
            "error": result_object.get('message', 'Failed to create attorney listing request'),
        }
    ]
}, 200  # Always return HTTP 200

This will ensure errors are shown properly in the dashboard. Reference: [Vapi custom tools troubleshooting](https://docs.vapi.ai/tools/custom-tools-troubleshooting) Source: - [Vapi custom tools troubleshooting](https://docs.vapi.ai/tools/custom-tools-troubleshooting)

@User @User

Hi, thanks for reaching out.

Thanks!

no worries!