{"uid":"cap_Zqumlhc3UrpImhjiNxzYq","slug":"x402check-credit-top-up-69ba776c","name":"x402check Credit Top-Up","description":"Pre-payment risk checks for x402 agents and wallets: OFAC SDN, phishing and drainer feeds, a live watch of drainer infrastructure, transaction simulation and injected-instruction analysis. Every verdict is an ES256 attestation that states which checks ran.","url":"https://x402check.xyz/v1/credits?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["amount_usd"],"properties":{"amount_usd":{"type":"number"}}},"responseSchema":{"type":"object","required":["balance_usd"],"properties":{"token":{"type":"string"},"balance_usd":{"type":"string"},"credited_usd":{"type":"string"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"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_nNaJznK5OhpR9bWtTXNpJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Adds a USD credit balance to an x402check account, enabling pre-payment risk checks for agents and wallets","exampleAgentPrompt":"Add $10 in credits to my x402check account so I can run OFAC and phishing risk checks on transactions.","exampleUseCases":[{"title":"Fund agent wallet screening budget","prompt":"Top up my x402check account with $25 so my agent can keep running OFAC SDN and phishing checks on every wallet it interacts with."},{"title":"Reload credits before drainer monitoring","prompt":"I'm running low on x402check credits — add $50 to my balance so I don't have to stop monitoring drainer infrastructure."},{"title":"Prepay for transaction simulation checks","prompt":"Put $5 of credits into x402check so I can simulate and screen a batch of upcoming transactions for injected instructions before they go out."}],"resultDescription":"Returns the updated USD balance, the amount credited, and optionally a session token confirming the credit transaction on the x402check account.","failureModes":["Invalid or missing amount_usd returns a 400 error","Payment failure (insufficient USDC or wallet error) results in no credit being applied","Network timeout during payment processing may leave credit state ambiguous","amount_usd of zero or negative values rejected","Account not found or authentication failure returns 401/403"],"whenToPreferThis":"Use this endpoint when you need to pre-fund an x402check account before running risk checks such as OFAC SDN screening, phishing/drainer feed lookups, transaction simulation, or injected-instruction analysis. This is a balance top-up step, not the risk check itself — call this first when your credit balance is low or depleted.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:33:42.869Z","isFirstParty":false,"canonicalSlug":"x402check-credit-top-up-69ba776c"}