S

ScrapeCheck · Verify

by ScrapeCheck

POSTBaseSolanaPolygon

$0.01

per call · USD Coin on Base

Checks whether a value you did not fetch yourself is actually on the page it came from. Independently re-fetches the source and returns a signed pass/fail/unverifiable verdict. A claim is never certified unless the re-fetched page contains it, and anything unconfirmed is unverifiable, never pass. Server-rendered pages only. $0.01 per check. First 100 checks per client are free: resend this exact request with header X-Use-Free-Allowance: yes and no payment to use them.

Endpoint

POST https://scrapecheck.fly.dev/verify

8

Calls / 30d

3

Unique payers / 30d

Sep 5

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://scrapecheck.fly.dev/verify", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "asked": "get the current price and stock status of A Light in the Attic",
    "claim": {
      "in_stock": true,
      "price": "£51.77"
    },
    "url": "https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"
  }),
});
const data = await res.json();
cURL
curl -X POST \
  "https://scrapecheck.fly.dev/verify" \
  -H "Content-Type: application/json" \
  -d '{"asked":"get the current price and stock status of A Light in the Attic","claim":{"in_stock":true,"price":"£51.77"},"url":"https://books.toscrape.com/catalogue/a-light-in-the-attic_1000/index.html"}' \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "check_type": "web_field_v1",
  "confidence": 0.97,
  "engine": "web_field_v1/0.2.0+2ae28205cac4",
  "evidence": {
    "lens_votes": {
      "does_answer": true,
      "is_current": true,
      "is_real": true
    },
    "refetch_excerpt": "…$29.99…",
    "refetched_at": "2026-07-31T17:38:14.697Z"
  },
  "key_id": "k2",
  "reasons": [
    "claimed price £51.77 found in re-fetched page; page shows \"in stock\""
  ],
  "signature": "ed25519:…",
  "source_hash": "sha256:…",
  "verdict": "pass",
  "verdict_id": "965abecd-a85f-45c7-98a2-49bde4bb9c51",
  "verifier_url": "https://scrapecheck.fly.dev"
}

Payment details

Pay to0x455f20ec147477cafcd6d77c1604529f3c4ff665
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase, Solana, Polygon
Schemesexact

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