Verify

Last 30 days

Uptime

100%

Response time

62 ms typical, 62 ms slowest 5%

Last check

3 h ago

Next check

any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://x402.agentindex.world/verify" \
  -H "content-type: application/json" \
  -d '{"claim":"The Eiffel Tower is taller than the Statue of Liberty.","source":"The Eiffel Tower stands 330 meters tall including antennas, while the Statue of Liberty, including its pedestal, reaches about 93 meters."}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.03:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402.agentindex.world%2Fverify
const res = await pay("https://x402.agentindex.world/verify", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"claim":"The Eiffel Tower is taller than the Statue of Liberty.","source":"The Eiffel Tower stands 330 meters tall including antennas, while the Statue of Liberty, including its pedestal, reaches about 93 meters."}),
});
console.log(await res.json());

Example input

{
  "claim": "The Eiffel Tower is taller than the Statue of Liberty.",
  "source": "The Eiffel Tower stands 330 meters tall including antennas, while the Statue of Liberty, including its pedestal, reaches about 93 meters."
}

Example output

{
  "confidence": 1,
  "probabilities": {
    "contradicted": 0,
    "not_enough_info": 0,
    "supported": 1
  },
  "probability": 1,
  "verdict": "supported",
  "x402_receipt": {
    "latency_ms": 390,
    "model_served": "jev",
    "price_paid_usdc": 0,
    "upstream": "verification"
  }
}

Security scan

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