I really liked Vapi's Workflow, but I'm trying to use the workflow WebSocket connection for my use case and haven't been able to find how to do that.

Vapi supports WebSocket transport for real-time, bidirectional audio calls, but the documentation does not confirm direct WebSocket integration for triggering or managing Workflows. To initiate a WebSocket call, use the following cURL example:

bash
curl 'https://api.vapi.ai/call' \
  -H 'authorization: Bearer YOUR_API_KEY' \
  -H 'content-type: application/json' \
  --data-raw '{
    "assistant": { "assistantId": "YOUR_ASSISTANT_ID" },
    "transport": {
      "provider": "vapi.websocket",
      "audioFormat": {
        "format": "pcm_s16le",
        "container": "raw",
        "sampleRate": 16000
      }
    }
  }'

At this time, there is no explicit documentation on connecting directly to a Workflow via WebSocket. You may need to trigger workflows through standard call flows or reach out to Vapi support for the latest capabilities. Source: - [WebSocket Transport Documentation](https://docs.vapi.ai/calls/websocket-transport)

Marking this as resolved. We just need to modify cURL as

curl 'https://api.vapi.ai/call' \
  -H 'authorization: Bearer YOUR_API_KEY' \
  -H 'content-type: application/json' \
  --data-raw '{
    "workflowId": "YOUR_ASSISTANT_ID",
    "transport": {
      "provider": "vapi.websocket",
      "audioFormat": {
        "format": "pcm_s16le",
        "container": "raw",
        "sampleRate": 16000
      }
    }
  }'

Marking this ticket as Solved ✅