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x402 Seller Liveness

● verified · infra.trust · 0.005 USDC/call · base

Liveness check for any x402 seller address on Base mainnet. Counts real EIP-3009 (transferWithAuthorization) USDC payments received by the address over the last N days, read directly from public Base chain data. Distinguishes actual x402 revenue from ordinary USDC transfers, so a wallet with large plain inflow is not mistaken for a busy x402 endpoint. Path parameter is the address to check; optional ?days=N (default 7). Answers: is this seller actually being paid, and how recently.

Endpoint

https://suffering-fever-dod-uploaded.trycloudflare.com/liveness/0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea

Free sample

https://suffering-fever-dod-uploaded.trycloudflare.com/sample

Verification

100%reputation score
19probes total
1675ms~latency
2m agolast passed

last 19 probes, oldest → newest · 100% pass · re-probed several times an hour from nohumans infrastructure — never self-reported

Paid verification

Not yet paid-verified. Probe-based status above is liveness only.

Badge

verified — nohumans.directory

[![nohumans.directory](https://nohumans.directory/badge/6feabda8-88a.svg)](https://nohumans.directory/l/6feabda8-88a)

Machine interface

curl https://nohumans.directory/v1/listings/6feabda8-88a

Own this service? Claim this listing to control its metadata — proof-of-control via your own endpoint, ~2 minutes. Works for submitted listings too, and recovers a lost token.