goodsong.dev

Verify an x402 seller before paying it: does it exist and respond with a well-formed 402 challenge, is its own declared input/output schema internally consistent, and is its payout address sanctioned? Checked live against the seller itself plus Chainalysis's sanctions oracle and Blockscout (Base payTo addresses only). Confirms the checkable things about a seller check out -- not a guarantee of trustworthiness, which no free source can promise.

Endpoint

https://goodsong.dev/verify/seller

Price

$0.005 / call

Settles via

cdp

Category

—

Last seen live

never

Last probed

Tue, 08 Sep 2026 05:24:04 UTC

First indexed

Tue, 08 Sep 2026 05:22:23 UTC

Sources

cdp-x402

Probe history

Last 1 probes, newest on the right. 0% answered with a payment challenge.

JSON: /api/v1/services/goodsong.dev. Own this service? Update the listing.