Embed LeadTracker AI in your voice AI and automation stack.

Authentication

Create an API key from LeadTracker AI app → Developer API. Keys are workspace-scoped, shown once, and use explicit permissions.

curl https://leadtrackerai.com/api/v1/scheduling/event-types \
  -H "Authorization: Bearer lt_live_..."

X-API-Key: lt_live_...

Event types

Fetch the booking types available in the authenticated workspace. Use an event type ID when retrieving availability or creating a booking.

curl https://leadtrackerai.com/api/v1/scheduling/event-types \
  -H "Authorization: Bearer $LEADTRACKER_API_KEY"

{
  "data": [{
    "id": 42,
    "title": "Discovery Call",
    "duration_minutes": 30,
    "timezone": "America/New_York",
    "booking_window_days": 14
  }]
}

Availability

Slots are returned as UTC ISO 8601 timestamps. Convert them to the caller's local time in your voice experience, then pass the selected UTC start time when booking.

curl "https://leadtrackerai.com/api/v1/scheduling/availability?event_type_id=42&start_date=2026-07-15&end_date=2026-07-21" \
  -H "Authorization: Bearer $LEADTRACKER_API_KEY"

{
  "data": {
    "event_type_id": 42,
    "timezone": "America/New_York",
    "slots": [{
      "start": "2026-07-15T14:00:00.000Z",
      "end": "2026-07-15T14:30:00.000Z"
    }]
  }
}

Create a booking

LeadTracker AI creates or updates the attendee's CRM lead, performs a final conflict check, creates the native meeting room, writes the connected calendar event, starts reminder delivery, and sends the normal Telegram booking notification.

curl -X POST https://leadtrackerai.com/api/v1/scheduling/bookings \
  -H "Authorization: Bearer $LEADTRACKER_API_KEY" \
  -H "Idempotency-Key: vapi-call-6d9f08b2" \
  -H "Content-Type: application/json" \
  -d '{
    "event_type_id": 42,
    "start": "2026-07-15T14:00:00.000Z",
    "attendee": {
      "name": "Avery Chen",
      "email": "avery@northstar.example",
      "phone": "+15125550123",
      "timezone": "America/Chicago",
      "company": "Northstar Health",
      "location": "Austin, TX"
    },
    "source": "vapi",
    "external_reference": "call_01J123",
    "metadata": { "agent": "inbound-sales" }
  }'

{
  "data": {
    "id": "ltbk_9c7bd1...",
    "status": "scheduled",
    "start": "2026-07-15T14:00:00.000Z",
    "end": "2026-07-15T14:30:00.000Z",
    "meeting_url": "https://leadtrackerai.com/meet/...",
    "lead_id": 2194
  },
  "duplicate": false,
  "lead_created": true
}

Read a booking

curl https://leadtrackerai.com/api/v1/scheduling/bookings/ltbk_9c7bd1... \
  -H "Authorization: Bearer $LEADTRACKER_API_KEY"

Reschedule a booking

{
  "start": "2026-07-16T16:00:00.000Z",
  "reason": "Caller requested a later time"
}

Cancel a booking

{
  "reason": "Prospect cancelled during the call"
}

Leads

Use the CRM endpoints to identify a caller, create or update a contact, and add durable notes or activities. They expose a deliberately small CRM-safe field set: no deletion, assignment, campaign enrollment, billing, or bulk export operations are available.

curl -X POST https://leadtrackerai.com/api/v1/leads/upsert \
  -H "Authorization: Bearer $LEADTRACKER_API_KEY" \
  -H "Idempotency-Key: voice-call-01JABC" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Avery Chen",
    "email": "avery@northstar.example",
    "phone": "+15125550123",
    "company": "Northstar Health",
    "timezone": "America/Chicago",
    "source": "retell",
    "attribution": { "utm_source": "partner" }
  }'

Inbound conversations

Ingest caller messages, transcripts, summaries, and dispositions into the existing lead timeline. These routes accept inbound data only; they never invoke an email, SMS, WhatsApp, or calling provider.

User Journey forms

Render the saved LeadTracker AI User Journey definition on a trusted server, then preserve the exact qualification, attribution, event stream, and lead notification behavior when a prospect submits it.

{brand} is your workspace's own brand slug — one per public booking/application page you've set up (find yours on the Applications dashboard's User Journey Forms page, or in each page's live URL). Any brand slug your workspace owns works here; it isn't limited to any fixed list.

Funnel analytics

Read aggregate application, qualification, booking, attribution, and abandonment metrics without exposing contact details, answers, session identifiers, or raw query strings.

Workflow triggers

Trigger a preconfigured webhook workflow from an external system. The API cannot create, edit, activate, or inspect workflow definitions; it can only invoke an active webhook.received workflow in the key's workspace.

Booking webhooks

Create endpoints from LeadTracker AI app → Developer API. Endpoint configuration is owner/admin session-only; API keys cannot add a destination or reveal a signing secret.

Errors and limits

All errors include a stable machine-readable code and an request_id for support and diagnostics.

{
  "error": {
    "code": "slot_taken",
    "message": "That slot is no longer available."
  },
  "request_id": "4c0725d0-..."
}

Security practices

Use separate keys for every provider and environment. Give each key a recognizable name, set a practical expiration, and replace it before sharing changes hands.