{"service":"402.coffee — external arbiter, scored variant","what":"Same as POST https://api.402.coffee/arbiter/verify ($0.25) plus parties_risk: each party's 0–100 score and tier from certified behaviour + on-chain payment history, inside the signed document.","price":"$0.60 USDC on Base via x402","policy":"https://api.402.coffee/arbiter/policy"}