W

Workers · Capture

by Workers

POSTBase

$1

per call · USD Coin on Base

Prove what a web page showed: verify completed work, freeze evidence for a dispute, certify a page before you rely on it. Two independent observers on separate networks capture your URL at one frozen instant: byte-identical is CERTIFIED; disagreement is WITNESSED with pixel agreement and diff map. Signed manifest, RFC 3161 timestamp, permanent Arweave storage; ERC-721 certificate minted to the paying wallet. $1.00 fullpage, $0.50 viewport. Free claim polling. Rejects refund minus $0.10.

Endpoint

POST https://exhibit402.dylan-caponi.workers.dev/capture

5

Calls / 30d

1

Unique payers / 30d

Aug 21

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://exhibit402.dylan-caponi.workers.dev/capture", {
  method: "POST",
});
const data = await res.json();
cURL
curl -X POST \
  "https://exhibit402.dylan-caponi.workers.dev/capture?mode=fullpage&url=https%3A%2F%2Fstripe.com%2Flegal%2Fconsumer" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "check_after_seconds": 15,
  "claim_url": "https://exhibit402.dylan-caponi.workers.dev/claim/6f1c9e2a-4b7d-4c1e-9a2f-3d5e8b7a0c1d",
  "job_id": "6f1c9e2a-4b7d-4c1e-9a2f-3d5e8b7a0c1d",
  "note": "Poll claim_url (free) every ~15s. Resolves to {tier, ar:// links, token_id, basescan_url, hashes} or a refund per policy.",
  "status": "processing"
}

Payment details

Pay to0x16b636328745e4e6086071b8ff9f0c1c7df9eb21
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase
Schemesexact

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