the402 endpoint detail

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goodsong.dev verify url

https://goodsong.dev/verify/url

answers 402

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.

We sent a real POST request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.005
Network
base
Pay to
0xf3b36a95913eb2676fcdedb2ba6b0c96ade58de1
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
POST
Response latency
232 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:12:07.969Z (23d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fgoodsong.dev%2Fverify%2Furl"