{"uid":"cap_VSHkJ-jV_Z5dyRoMCHSIj","slug":"signgate-agent-buyer-identity-preflight-sumsub-payment-method-crypto-87fcf0d1","name":"SignGate Agent Buyer Identity Preflight – Sumsub Payment Method Crypto Evidence","description":"Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.","url":"https://base-agent-preflight.bytoken2023.workers.dev/v1/x402/sumsub/payment-method-crypto-evidence","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["applicant_id","wallet"],"properties":{"wallet":{"type":"string","pattern":"^0x[a-fA-F0-9]{40}$","description":"Crypto wallet/payment method address."},"applicant_id":{"type":"string","pattern":"^[A-Za-z0-9._:-]{1,128}$","description":"Sumsub applicant id or sandbox fixture reference."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"network":{"type":"string"},"product":{"type":"string"},"activity":{"type":"object"},"identity":{"type":"object"},"assessment":{"type":"object"},"provenance":{"type":"object"}}}}}}},"responseSchema":{"type":"json","example":{"network":"eip155:8453","product":"sumsub-payment-method-crypto-evidence","assessment":{"flags":[],"risk_level":"low","risk_score":0}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_luvHoyHAIAEjSdqPeFfky","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Verifies KYC/AML risk level of a crypto wallet address against a Sumsub applicant identity before an AI agent executes an x402 micropayment purchase.","exampleAgentPrompt":"Before my AI agent buys that x402 dataset, run a preflight identity check on Sumsub applicant 'user-abc123' using wallet address 0xAbCd1234567890AbCd1234567890AbCd12345678 to confirm the risk level is acceptable.","exampleUseCases":[{"title":"Pre-purchase compliance gate for agent","prompt":"My agent is about to buy an x402 API — first check if Sumsub applicant 'agent-kyc-9f2a' with wallet 0x1A2B3C4D5E6F7A8B9C0D1E2F3A4B5C6D7E8F9A0B is low-risk and cleared to proceed."},{"title":"AML screening before dataset acquisition","prompt":"Before purchasing that sensitive financial dataset via x402, screen wallet 0xDeAdBeEf1234567890AbCdEf1234567890AbCdEf for Sumsub applicant 'ds-buyer-0042' and tell me the risk score and any flags."},{"title":"Automated agent wallet risk assessment","prompt":"Run a Sumsub crypto evidence preflight on applicant 'sandbox:test-user-001' and wallet 0xFeDcBa9876543210FeDcBa9876543210FeDcBa98 so I can decide whether to let my agent proceed with the x402 payment."}],"resultDescription":"Returns a JSON object with the Base network identifier (eip155:8453), product name (sumsub-payment-method-crypto-evidence), and an assessment object containing a risk_score (numeric), risk_level (e.g. 'low'), and flags array listing any AML/KYC concerns found for the wallet-applicant pair.","failureModes":["Invalid wallet address format (not a valid 0x hex address) returns a validation error","Unknown or non-existent Sumsub applicant_id returns a not-found or fixture error","High risk score or flagged wallet results in a non-low risk_level in the assessment, blocking purchase","Network or Cloudflare Worker timeout returns a 5xx error","Missing required query parameters returns a 400 bad request"],"whenToPreferThis":"Use this endpoint when an AI agent operating under x402 payment governance needs to verify that the purchasing wallet and its associated Sumsub KYC identity are compliant before executing a crypto micropayment. Prefer this over generic wallet screening tools when the workflow is specifically x402-protocol-based and Sumsub is the identity provider, especially for Base network (eip155:8453) transactions where buyer role eligibility and AML risk must be confirmed programmatically before the agent spends funds.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:51:19.720Z","isFirstParty":false}