Set up Proof in 5 minutes

Head to /signup and create your organization. You'll set up your admin credentials and can enroll for secure admin login using a passkey (WebAuthn) or Proof 2FA in one flow.

API keys authenticate your calls to the verification and presence APIs. In the admin portal, go to API Keys and click Create API Key.

The key (starting with prf_) is shown once — copy it somewhere safe. It authenticates both:

• Verify API — identify users from a selfie (POST /api/verify)
• Presence API — create sessions for AI agent workflows (POST /api/presence/sessions)

Before you can verify someone, they need to enroll. There are two ways:

The user's status changes from Pending to Registered once enrollment is complete. You can track progress in the dashboard.

With at least one enrolled user, you can test the verification API. Send a selfie and your API key:

curl -X POST https://your-domain.com/api/verify \
  -H "X-API-Key: prf_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{ "image": "<base64-encoded-jpeg>" }'

A successful response looks like:

{
  "verified": true,
  "email": "alice@company.com",
  "confidence": 0.97,
  "token": "eyJhbGciOiJIUzI1NiIs...",
  "checks": {
    "compositeScore": 0.95,
    "liveness": 0.98,
    "frameConsistency": 0.92
  }
}

The response includes a Human Presence Token (HPT) — a signed JWT that proves this person was biometrically verified at this moment.

Proof includes an MCP server that lets AI agents (Claude, Cursor, custom agents) request human presence verification before taking high-value actions like deployments or financial operations.

Quick setup

Add Proof to your AI agent's MCP config:

{
  "mcpServers": {
    "proof": {
      "command": "npx",
      "args": ["-y", "@webel/mcp-server"],
      "env": {
        "PROOF_API_URL": "https://your-domain.com",
        "PROOF_API_KEY": "prf_your_api_key"
      }
    }
  }
}

How it works