ONE SELFIE. ONE FREE CALL. THEN HTTP 402.

Try once.
Then the request pays.

Alive402 gives a selfie-verified enrollment one promotional API call. After that, the same endpoint returns HTTP 402; a budgeted agent pays on Hedera and unlocks the response—no subscription or API key.

Try the live service See how it works
World IDWorldSelfie Check
HederaHederaTestnet settlement
402x402HTTP 402
Alive402

Alive402 Live Service

Prototype flow · Testnet target

Interactive UI preview: Selfie Check → Promotional call → HTTP 402 → agent payment.

1
World ID VerificationFree

Verify with World Selfie Check

Checking biometric liveness to prevent bot farming.

Scanning...
2
Fair Promotional Sample$0.00 Free

Call #1 — Promotional ($0.00)

Selfie check grants 1 free promotional call without credit cards or keys.

1 Free Call
3
Hedera x402 Micropayment0.001 USDC

Call #2 — HTTP 402 Payment

Future calls require micro-payment on Hedera Testnet.

0.001 USDC

World Selfie Check

Selfie Check & Fair Trial Enrollment

Sandbox target

Detecting facial landmarks & lighting...

A real World proof will be verified by the backend

Previewing the World verification state...

How it works

From selfie to settlement.

A simple flow that makes AI access fair for humans and seamless for agents.

1

Verify yourself

Complete World Selfie Check
to get a verified enrollment.

2

Get one free call

Use the service once,
no payment required.

3

Pay per call

Next requests return HTTP 402.
A budgeted agent settles on Hedera
and the response is unlocked.

For builders

Wrap the API you already have.

Use Alive402 as a middleware or a small SDK. Add a fair free-to-paid flow to any HTTP service in a few lines.

View integration guide 
import { withAlive402 } from "@nikhilraikwar/alive402-sdk";

export const POST = withAlive402(handler, {
  providerId: "acme-ai",
  world: { action: "alive402-acme-ai-trial-v1", resolveEnrollment },
  trial: { freeCalls: 1, store },
  payment: {
    network: "hedera:testnet", asset: "0.0.429274", amount: "1000",
    payTo: process.env.HEDERA_SERVICE_ACCOUNT_ID!,
    facilitatorUrl: process.env.BLOCKY402_FACILITATOR_URL!
  }
});
Works with any APIAdd in minutes
Configurable policyFree calls, pricing, network
Built for agentsProgrammatic payments

Let people try. Let agents pay.

Integration targets: Hedera Testnet  ·  World Sandbox  ·  Blocky402

Try the live service