https://vapi.ai/ logo
Join Discord
Powered by
prompt error
# support
j
when i try to do a conditional function call to call a tool i need, it doesn't work. the webhook doesn't get triggered because no data is being sent from vapi. i tried changing the condition and ive tried ensuring the tool is set up properly but i cannot figure out why it's not working, ive set up like 10 conditional function calls and never had a problem with the webhook not being triggered. if anyone can help that would be appreciated
v
Hi there! Sorry to hear you're having trouble with your conditional function call not triggering the webhook. I understand that you've already tried changing the condition and ensuring the tool is set up properly, but the webhook isn't being triggered because no data is being sent from Vapi. Let me help you troubleshoot this issue. Here are some steps you can take to diagnose and fix the problem: ### 1. Check Your Server URL Configuration Make sure your 
serverUrl
is properly configured. This URL is where Vapi sends function call information, and if it's not defined correctly, the function call will simply be added to the chat history without triggering the webhook. According to the [Vapi documentation on function calling](https://docs.vapi.ai/assistants/function-calling), you can configure the 
serverUrl
at either the account level (in the Vapi Dashboard) or at the assistant level in the assistant configuration. ### 2. Verify Your Webhook URL Double-check that the webhook URL has no typos or accidental spaces. Even small errors can prevent the webhook from being triggered. ### 3. Test the Webhook Manually Use tools like Postman or cURL to manually trigger the webhook and verify it's operational. This can help determine if the issue is with Vapi or with the webhook itself. ### 4. Check Function Configuration Review your function configuration in Vapi, including: - HTTP method (POST, GET, etc.) - Headers and authentication tokens - Required parameters ### 5. Review Logs Check both Vapi logs and your webhook service logs for any error messages that might indicate what's going wrong. ### 6. Data Format Issues Ensure the data structure being sent from Vapi matches what your webhook expects. According to troubleshooting information, data format mismatches are a common cause of webhook failures. ### 7. Response Format
If your webhook is being called but not working correctly, ensure your JSON response is correctly formatted. The proper format should include the correct 
toolCallId
and 
result
fields:
Copy code
json
{
  "results": [
    {
      "toolCallId": "<your-tool-call-id>",
      "name": "<your-function-name>",
      "result": "Success" // Or any success message
    }
  ]
}
### 8. Check for Potential Vapi Issues There have been reports of similar issues with webhooks not being triggered, which might indicate a problem on the Vapi side. Some users have reported a bug with adding headers, though "x-vapi-secret" seems to work consistently. Would you be able to share more details about your specific implementation? That might help narrow down the exact cause of the issue. Sources: - [Vapi documentation on function calling](https://docs.vapi.ai/assistants/function-calling) - [Discord thread on webhook troubleshooting](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1336345690393149452) - [Discord thread on webhook response format](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1342188078437236916) - [Discord thread on header bugs](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1335016477178200105)
s
checking if this is resolved/solved for you?
j
no
i also tried making a new agent and even with nothing in tools or the prompt it still won’t save
s
We are working on it ☹ really sorry for all the pain you are going through it.
PreviousNext
Powered by