Assistant Not Triggering Custom Tool WebhooksMessage
Hello VAPI Support,
I'm experiencing an issue where my custom tool works when tested directly,
but doesn't trigger the webhook when called by my assistant during conversations.
DETAILS:
Testing the tool directly in VAPI Dashboard → webhook receives request
My webhook endpoint (n8n) works perfectly
WHAT DOESN'T WORK:
When assistant calls the tool during chat → webhook never receives request
VAPI logs show "No result returned" error
n8n shows no execution when assistant calls tool
I've tried:
webhook is never triggered. This only happens when the assistant calls it,
not when I test the tool directly.
Can you help diagnose why the assistant isn't actually sending webhook
requests to my endpoint?
Thank you!
I'm experiencing an issue where my custom tool works when tested directly,
but doesn't trigger the webhook when called by my assistant during conversations.
DETAILS:
- Tool ID: 23a97c05-eb36-4551-b152-2907f3a9ef45
- Tool Name: check_availability
- Assistant ID: ed1cee38-797d-4e48-9af5-...
- Webhook URL: https://imel.app.n8n.cloud/webhook/vapi-receptionist
Testing the tool directly in VAPI Dashboard → webhook receives request My webhook endpoint (n8n) works perfectlyWHAT DOESN'T WORK:
When assistant calls the tool during chat → webhook never receives request VAPI logs show "No result returned" error n8n shows no execution when assistant calls toolI've tried:
- Removing and re-adding tools to assistant
- Recreating the tool
- Verifying all configurations
- Checking async settings (it's OFF)
- Testing with different prompts
webhook is never triggered. This only happens when the assistant calls it,
not when I test the tool directly.
Can you help diagnose why the assistant isn't actually sending webhook
requests to my endpoint?
Thank you!
