open-pay.jp

7 x402 endpoints assessed · worst score 70/100 · generated 2026-09-22T20:24:14.828Z

Some endpoints are safe to pay

Verdicts

pay 7 · caution 0 · avoid 0

Findings across this host

missing-trust-surface — 7 endpoints
no-www-authenticate — 7 endpoints
stale — 6 endpoints
evaluation-traffic — 5 endpoints
thin-listing — 1 endpoint

Endpoints

method	resource	verdict	score	findings
`GET`	`https://open-pay.jp/api/paid/usdc/jpyc/activity`	pay	70	`missing-trust-surface` `no-www-authenticate` `stale` `evaluation-traffic`
`GET`	`https://open-pay.jp/api/paid/usdc/jpyc/balance`	pay	70	`missing-trust-surface` `no-www-authenticate` `stale` `evaluation-traffic`
`GET`	`https://open-pay.jp/api/paid/usdc/jpyc/supply`	pay	70	`missing-trust-surface` `no-www-authenticate` `stale` `evaluation-traffic`
`GET`	`https://open-pay.jp/api/paid/usdc/stablecoin-payments`	pay	70	`missing-trust-surface` `no-www-authenticate` `stale` `evaluation-traffic`
`GET`	`https://open-pay.jp/api/paid/hello`	pay	75	`missing-trust-surface` `no-www-authenticate` `thin-listing` `evaluation-traffic`
`GET`	`https://open-pay.jp/api/paid/usdc/jpyc/services`	pay	80	`missing-trust-surface` `no-www-authenticate` `stale`
`GET`	`https://open-pay.jp/api/paid/usdc/jpyc/transfers`	pay	80	`missing-trust-surface` `no-www-authenticate` `stale`

Fix it

This page is free and shows what is wrong. The full audit adds severity, business impact and the exact fix for every finding, EIP-712 signed so you can hand it to whoever maintains the service.

POST https://enclave402.com/api/audit/host — $25.000 USDC via x402, body {"host":"open-pay.jp"}

Verdicts come from a continuous probe of x402 resources. How grading works · our own settlement ledger and self-dealing share. If you believe a verdict is wrong, re-probe with /api/seller/vet.