x402-catalog-change-log

See what moved in the x402 catalogue over the period you choose: for every field, the value before and after, the observation time and the target it belongs to — plus where observation stopped, where it resumed and which cycles are missing. One GET, one delivery, read-only, no live upstream call. A purchase is two calls by design: this first call returns 402 with the price and the payment terms, a

Open endpoint ↗

Price per call: $0.02
Chain: Base
Method: GET
Paid calls · 30 days: 0

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://x402-catalog-history.ai-business-surface.workers.dev/changes", { method: "GET" });
console.log(await res.json());

https://x402-catalog-history.ai-business-surface.workers.dev/changes