Deliver a verified lead in minutes.

Quickstart

The public sandbox performs the complete normalization and receipt flow without contacting an external CRM. No API key is required.

curl https://leadproof.jessesay.chatgpt.site/api/v1/sandbox \
  -H "Content-Type: application/json" \
  -d '{
    "name": "Alex Morgan",
    "email": " ALEX@ACME.IO ",
    "phone": "(555) 013-4821",
    "source": "web_form"
  }'

Verification receipt

{
  "status": "delivered",
  "mode": "sandbox",
  "normalized": {
    "email": "alex@acme.io",
    "phone": "+15550134821"
  },
  "delivery": {
    "attempts": 1,
    "verified": true
  },
  "receipt": {
    "id": "rcp_test_...",
    "created_at": "2026-07-18T...Z"
  }
}

POST /v1/sandbox

Use the sandbox for integration development, automated tests, or evaluating LeadProof. It never forwards personal data to an external destination.

POST /v1/leads

The production endpoint requires a pilot API key, a public HTTPS destination, and an optional Idempotency-Key. It retries network errors, 429 responses, and 5xx responses up to three total attempts.

Error behavior