realdep-package · Verify Package

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://goodsong.dev/verify/package", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "ecosystem": "npm",
    "name": "chalk",
    "version": "5.3.0"
  }),
});
const data = await res.json();

curl -X POST \
  "https://goodsong.dev/verify/package" \
  -H "Content-Type: application/json" \
  -d '{"ecosystem":"npm","name":"chalk","version":"5.3.0"}' \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "canonical": {
    "ecosystem": "npm",
    "latest_version": "5.3.0",
    "name": "chalk",
    "version": "5.3.0",
    "vulnerabilities": []
  },
  "checks": {
    "deprecated": false,
    "exists": true,
    "vulnerable": false
  },
  "cost": {
    "amount": "0.005",
    "currency": "USDC"
  },
  "evidence": [
    {
      "retrieved_at": "2026-08-30T12:00:00Z",
      "source": "npm",
      "url": "https://registry.npmjs.org/chalk"
    },
    {
      "retrieved_at": "2026-08-30T12:00:00Z",
      "source": "osv",
      "url": "https://api.osv.dev/v1/query"
    }
  ],
  "latency_ms": 210,
  "verdict": "confirmed"
}