$0.005
per call · USD Coin on Base
Verify a URL: does it resolve, what's the final status and redirect chain, is it archived on the Wayback Machine, and (optionally) does expected text appear on the page. Checked via direct fetch and the Internet Archive.
Endpoint
POST https://goodsong.dev/verify/url4
Calls / 30d
1
Unique payers / 30d
Sep 4
Last called
exact
Payment scheme
Call this service
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/url", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"url": "https://example.com/blog/some-article"
}),
});
const data = await res.json();curl -X POST \
"https://goodsong.dev/verify/url" \
-H "Content-Type: application/json" \
-d '{"url":"https://example.com/blog/some-article"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"canonical": {
"archived_snapshot": {
"status": "200",
"timestamp": "20240101000000",
"url": "https://web.archive.org/web/20240101000000/https://example.com/blog/some-article"
},
"content_hash": "sha256:...",
"final_url": "https://example.com/blog/some-article",
"redirect_chain": [],
"title": "Some Article"
},
"checks": {
"archived": true,
"content_match": null,
"final_status": 200,
"redirected": false,
"resolves": true
},
"cost": {
"amount": "0.005",
"currency": "USDC"
},
"evidence": [
{
"retrieved_at": "2026-08-30T12:00:00Z",
"source": "direct_fetch",
"url": "https://example.com/blog/some-article"
},
{
"retrieved_at": "2026-08-30T12:00:00Z",
"source": "wayback_machine",
"url": "https://archive.org/wayback/available"
}
],
"latency_ms": 480,
"verdict": "confirmed"
}Payment details
0xf3b36a95913eb2676fcdedb2ba6b0c96ade58de1USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Search & Web and the homepage with a featured placement.
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