Ship identity in
hours, not months.

① Create a session

POST /v1/sessions
Authorization: Bearer YOUR_API_KEY

{
  "steps": [
    { "primitive": "identify", "params": { "blocks": ["first_name", "dob", "country"] } },
    { "primitive": "sign", "params": { "document_hash": "sha256:abc..." } }
  ]
}

Response:
{
  "id": "sess_abc123",
  "url": "https://uip.digital/s/sess_abc123",
  "status": "created",
  "expires": "2026-04-26T12:34:56Z"
}

② Receive a signed webhook on every step

POST https://your-app.com/uip-webhook
X-UIP-Event: step.completed
X-UIP-Signature: <hmac-sha256 of timestamp.body>

{
  "event": "step.completed",
  "data": {
    "session_id": "sess_abc123",
    "stage": 0,
    "primitive": "identify",
    "claims": { "first_name": "Jane", "country": "US" }
  }
}