x402-domain-check.vercel.app

Material changes to tracked RFP/grant opportunities since a timestamp: deadline moves, budget changes, new amendments, new Q&A, new certification/eligibility requirements, status and attachment changes. Pass up to 10 opportunity keys from /opportunities/search (grants:<id> or sam:<noticeId>). Uses our stored snapshots (SAM.gov only serves the latest version) plus Grants.gov revision metadata. Not

Open endpoint ↗

Price per call: $0.05
Chain: Base
Method: GET
Paid calls · 30 days: 1

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-domain-check.vercel.app/opportunities/changes", { method: "GET" });
console.log(await res.json());

https://x402-domain-check.vercel.app/opportunities/changes