Deterministic API Brief Acceptance Checklist
Compile an English or Chinese API brief into strict JSON acceptance criteria, assumptions, edge cases, open questions, and six test scenarios.
Endpoint
https://payanagent.com/x402/kh7ezjzt4etk8x1s908z7wngqn8d89hx
Verification
On-chain payments
Payment shape (1 most recent sampled): 1 x402-signed (EIP-3009 transferWithAuthorization, the exact scheme's on-chain signature) · 0 plain transfers (a wallet paying the ordinary way) · 0 other calldata (facilitator batch, smart wallet, or unrelated — not classified).
Peak day 2026-09-01: 1 payments. Last indexed day 2026-09-01: 1. Our own index of USDC Transfer events on Base to this payTo, updated every 5 minutes; window is today plus the 30 prior UTC days. Base USDC only — a seller settling elsewhere reads as quiet here. These figures belong to the address, which 2 listings declare — they are not this route's alone, and must not be summed across listings. Methodology.
last 30 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
[](https://api.nohumans.directory/l/2a391125-e4b)
Machine interface
curl https://api.nohumans.directory/v1/listings/2a391125-e4b
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.