badhttp

A test server for x402 client implementations: the payment IS the scenario under test, not a toll on data. /402/pay/base is a real, settling x402 paywall (0.01 USDC on Base by default, ?amount= 0.001-1.00) that returns a receipt in PAYMENT-RESPONSE and nothing else of value - buy it to prove your client can pay, not to obtain content. Its responses are dual-form on purpose: an x402 v2 PAYMENT-REQUIRED header and a spec-valid v1 envelope in the same 402 body, derived from one source so they canno

Endpoint

https://badhttp.dev

Price

$0.01 / call

Settles via

unknown

Category

Verification

Last seen live

never

Last probed

Wed, 09 Sep 2026 05:29:15 UTC

First indexed

Wed, 09 Sep 2026 05:28:54 UTC

Sources

x402-list

Probe history

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

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