Supported Providers

Overview

Voxfra currently supports Vapi for production webhook ingestion. Additional providers are reviewed and prioritized based on customer demand.

Provider	Status	Path segment	Trigger event
Vapi	Live now	`vapi`	End-of-call report
Retell	In review	—	—
Bland	In review	—	—
LiveKit	In review	—	—
ElevenLabs	In review	—	—

Vapi

Webhook URL format:

POST https://api.voxfra.com/webhook/vapi/{slug}

In your Vapi dashboard, set the Server URL for your assistant to the webhook URL above. Vapi sends an end-of-call report when the call ends. Minimum required fields:

{
  "call": {
    "id": "call_abc123",
    "status": "completed",
    "startedAt": "2026-04-14T10:00:00Z",
    "endedAt": "2026-04-14T10:05:30Z"
  },
  "transcript": "Hello, how can I help you today?...",
  "customer": {
    "number": "+15551234567"
  },
  "recordingUrl": "https://recordings.vapi.ai/call_abc123.mp3"
}

Voxfra also reads analysis.summary, analysis.sentiment, and analysis.intent if present. For the complete reference, see Vapi.

Providers in review

The following providers are being reviewed for launch order and demand:

Retell
Bland
LiveKit
ElevenLabs

If you need one of these urgently, contact support so it can be prioritized against current customer demand.

Testing your webhook

You can test delivery using curl:

curl -X POST \
  https://api.voxfra.com/webhook/vapi/YOUR_SLUG \
  -H "Content-Type: application/json" \
  -d '{
    "call": { "id": "test_call_001", "status": "completed" },
    "transcript": "Test call."
  }'

A successful response:

{ "success": true, "requestId": "req_xe9k2a7f" }

Getting Started

Changelog

Webhook Integration

Management API

Supported Providers

Overview

Vapi

Providers in review

Testing your webhook

​Overview

​Vapi

​Providers in review

​Testing your webhook

Overview

Vapi

Providers in review

Testing your webhook