x402 Seller Liveness

https://monthly-javascript-abroad-english.trycloudflare.com/liveness/0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea

● down agent-verification-security

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). Free sample of the exact output shape at /sample.

Quality grade

How grading works

D 15.8 / 100 capped at D while down

Availability 0.0 / 40

Endpoint did not respond

Payability 10.0 / 20

✗ Answers a real HTTP 402 challenge
✓ Publishes a /.well-known/x402 descriptor
✓ Payment address on record
✓ Settlement network declared
✓ Price declared

Demand 5.8 / 40

2 distinct payers, 2 USDC transfers in the last 30 days

Owner verified 0.0 / 3

Nobody has claimed this listing yet

Endpoint last checked 10 h ago. On-chain activity last read 11 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

How to call

cURL · x402-fetch / x402-axios will auto-handle 402

curl -X POST https://monthly-javascript-abroad-english.trycloudflare.com/liveness/0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea

/.well-known/x402.json

https://monthly-javascript-abroad-english.trycloudflare.com/.well-known/x402

Listed in

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