{"uid":"cap_0wfvpRoq5AQS4ItjLHzA1","slug":"payperbyte-merchant-screen-x402-pre-settlement-verification-afa0abd4","name":"PayPerByte Merchant Screen — x402 Pre-Settlement Verification","description":"Pre-settlement merchant screen: signed ALLOW/WARN/BLOCK on (domain, payTo, price) before you settle. Queries are logged (domain, payTo, price); screening is not covert — the merchant sees the probe. Full disclosure: https://x402.payperbyte.io/feeds","url":"https://x402.payperbyte.io/feeds/merchant-screen","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"chain":{"enum":["base"],"type":"string","default":"base"},"domain":{"type":"string","description":"The merchant host the agent is about to pay."},"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"Optional — the payTo the agent observed."},"observed_price_atomic":{"type":"string","pattern":"^[0-9]+$","description":"Optional — atomic USDC price quoted to the agent. STRING (may exceed 2^53; a JSON number is rejected upstream)."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_d9wXJP5vUFn33NYYDwKR8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a cryptographically signed ALLOW/WARN/BLOCK verdict on an (domain, payTo address, observed price) triple before an AI agent settles an x402 payment","exampleAgentPrompt":"Before you settle that x402 payment, screen the merchant — the domain is checkout.example.com, the payTo address is 0xABC123, and the requested price is 0.05 USDC — give me a signed ALLOW/WARN/BLOCK verdict.","exampleUseCases":[{"title":"Agent payment safety gate","prompt":"My AI agent is about to pay an x402 endpoint at api.dataprovider.io with payTo address 0xDEF456 for 0.10 USDC — screen it first and tell me if it's safe to proceed."},{"title":"Suspicious storefront pre-check","prompt":"Before my agent settles a payment, can you check whether the domain payperbyte-payments.xyz with receiving address 0x9988FF and a price of 1.00 USDC looks legitimate or should be blocked?"},{"title":"Automated payment pipeline guard","prompt":"I'm building an agentic workflow that auto-pays x402 endpoints — screen every merchant before payment using the domain, payTo wallet, and the listed price so only ALLOW verdicts proceed."}],"resultDescription":"A cryptographically signed JSON verdict containing one of ALLOW, WARN, or BLOCK for the submitted (domain, payTo address, observed price) combination, along with supporting risk signals and metadata about why the verdict was reached.","failureModes":["Unknown or unresolvable domain returns WARN or BLOCK with low-confidence signal","Mismatched payTo address for a known domain triggers BLOCK","Price outside expected range for a known merchant may trigger WARN","Malformed input (invalid address format, missing fields) returns a 4xx error","Network timeout or service unavailability returns no verdict — agent should treat as WARN and not proceed"],"whenToPreferThis":"Choose this endpoint when an AI agent is operating autonomously in an x402 payment flow and needs a pre-settlement trust signal before committing funds. It is specifically designed for the x402 protocol context, returns a machine-actionable signed verdict, and covers the unique (domain + payTo + price) triple that defines an x402 merchant storefront — making it more targeted than generic blockchain address lookup services.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:40:42.424Z","isFirstParty":false}