x402 · USDC on Base or Solana

x402-news-wire

Global news search over GDELT. An agent sends a query, pays $0.003 in USDC, and gets matching articles plus a coverage-volume timeline back in the same response. The $0.002 pulse route returns only what is new since your last cursor. No API key, no account, no subscription.

GitHub Tutorial API reference For AI agents

git clone https://github.com/nirholas/x402-news-wire
cd x402-news-wire && npm install
npm run dev

Pricing

Route	Price	Returns
`GET /query`	$0.003	Matching articles (title, URL, domain, language, source country, seen date) and a coverage-volume timeline over the timespan
`GET /pulse`	$0.002	New articles since the caller's cursor, a `nextCursor` for the following poll, and a `truncated` flag
`GET /`, `GET /health`, `GET /.well-known/x402`	free	Service info, liveness, discovery manifest

Every paid route returns the purchased artifact in the 200 response body.

Two rails, one price

The 402 challenge advertises both. Your client picks whichever it can sign.

USDC on Base

network base-sepolia · base on mainnet

0x40252CFDF8B20Ed757D61ff157719F33Ec332402

USDC on Solana

network solana · solana-devnet on devnet

WwwuGbqHrwF5RG89KhUbmRWEvjnRH9k5kVM5p7T3WwW

How a paid call works

Quickstart (agent side)

import { wrapFetchWithPayment, createSigner } from "x402-fetch";

const signer = await createSigner("base-sepolia", process.env.PRIVATE_KEY!);
const payFetch = wrapFetchWithPayment(fetch, signer);

const res = await payFetch(
  "http://localhost:4022/query?q=semiconductor%20export%20controls&timespan=3d&maxRecords=25"
);
const artifact = await res.json(); // purchased artifact, in-response