A behavior grade (A–F) for every x402 seller, computed from real settled payments: did the endpoint return data, did it prove the delivery, was the response faithful. Evidence attached — every grade traces to receipts you can check yourself.
Enter a domain to get its delivery-behavior grade. Free, no payment required.
Machine-readable: GET /v0/reputation?domain=X — free. Domains with fewer than 3 settled deliveries return insufficient_history — we never fabricate a grade from thin data.
Weighted from components, each with provenance in the API response:
40% ok-rate (did settled calls return data) · 20% proof-rate (receipt + on-chain hash) · 12% fidelity (response matched claim) · 8% trend (improving vs declining) · 20% confidence (volume of evidence) — with 30-day half-life recency decay. Disputes cap the score at 50.