Source-bounded fact-check. Verify a claim against provided source text. Returns ...

Source-bounded fact-check. Verify a claim against provided source text. Returns verdict: supported, contradicted, or unverifiable. Does NOT search the web.

https://x402.asterpay.io/v2/x402/ai/fact-check

USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE

AI CODING TOOLS

quote-check.ts

const response = await fetch("https://x402.asterpay.io/v2/x402/ai/fact-check", {
  method: "GET",
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

This sends no payment. Inspect the 402 response before adding a wallet-enabled client.

JSON ↗developer docs →

STATUS HISTORY

JSON RSS

Live 402 quote confirmed2026-07-10 15:07 UTC
GET returned a protocol-valid 402 quote (402). No payment was made.
Origin reachable2026-07-10 15:04 UTC
HEAD https://x402.asterpay.io/ returned 200.
Observed in 402-index2026-07-10 13:31 UTC
Discovered through bazaar.
Registry record checked2026-07-08 00:33 UTC
Registry health: healthy.

EVIDENCE

402-indexobserved 2026-07-10 · https://402index.io/api/v1/services

origin checkHEAD https://x402.asterpay.io/ → 200 on 2026-07-10

route quotelive 402 quote confirmed · GET 402 · 2026-07-10

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call.

PAYMENT OPTIONS

eip155:8453exact1000 atomic · 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

eip155:137exact1000 atomic · 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359

eip155:42161exact1000 atomic · 0xaf88d065e77c8cC2239327C5EDb3A432268e5831

eip155:10exact1000 atomic · 0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85

eip155:1exact1000 atomic · 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48

eip155:1187947933exact1000 atomic · 0x85889c8c714505E0c94b30fcfcF64fE3Ac8FCb20