Direct REST API - Leadblanc

The Leadblanc API lets you embed conversation capabilities into custom mobile apps, voice frontends, internal CRMs, and backend workflow automations.

Authentication

All API requests require a Bearer token passed in the Authorization HTTP header. Generate your API keys in the dashboard under Settings > API Keys (available on Pro and Enterprise tiers).

Authorization: Bearer lb_live_xxxxxxxxxxxxxxxxxxxxxxxx

Base URL

https://api.leadblanc.com/v1

Send Message Request

curl -X POST "https://api.leadblanc.com/v1/chat" \
  -H "Authorization: Bearer lb_live_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "conversation_id": "conv_98231",
    "customer": {
      "name": "Alex Mercer",
      "email": "alex@example.com"
    },
    "message": "Can you check if order #4091 has shipped?"
  }'

Response

{
  "status": "success",
  "data": {
    "message_id": "msg_01J8F2",
    "reply": "Order #4091 shipped yesterday via DHL Express! Your tracking number is DHL-99218204.",
    "agent_name": "Leadblanc Assistant",
    "created_at": "2026-11-14T07:49:00Z"
  }
}

For detailed parameter definitions and error status codes, check the full API Reference.

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