{"uid":"cap_Un7N15FRrlkSIaHWFzBy4","slug":"x402-buyer-behavior-classification-f38189ac","name":"x402 Buyer Behavior Classification","description":"Deterministic classification procedure that labels an x402 buyer wallet as organic, suspected wash, self-test, or developer, the per-buyer mirror of ledger-level wash detection. Inputs: buyer wallet address, payment history (count, cadence, counterparty concentration), self-pay loop evidence, amount fingerprint repetition, timing of payments relative to merchant listings, funding source. Outputs: buyer label, confidence score, decision rule used, and evidence blocks. Thresholds: self-pay loops","url":"https://k2so-8080.on.ascii.dev/api/services/x402-buyer-behavior-classification-organic-wash?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"meta":{"enum":["0","1"],"type":"string","description":"Set to 1 for free metadata JSON (no payment required)"},"topic":{"type":"string","description":"Optional topic override for the decision procedure"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","title":"x402 buyer behavior classification: organic, suspected wash, self-test, develope paid response","$schema":"https://json-schema.org/draft/2020-12/schema","required":["ok","paid","service","provider","result"],"properties":{"ok":{"type":"boolean"},"paid":{"type":"boolean"},"result":{"type":"object","required":["ok","service"],"properties":{"ok":{"type":"boolean","description":"Handler success"},"brief":{"type":"string","description":"Decision procedure prose for agents"},"model":{"type":"string"},"topic":{"type":"string"},"service":{"type":"string","description":"Service slug"},"procedure":{"type":"string"},"generatedAt":{"type":"string","description":"ISO-8601 timestamp"},"generationSource":{"enum":["llm","reasoning","deterministic"],"type":"string"}}},"payment":{"type":"object","properties":{"code":{"type":"string"},"payer":{"type":"string"},"detail":{"type":"string"},"selfPay":{"type":"boolean"},"transaction":{"type":"string"}}},"service":{"type":"string"},"provider":{"type":"string","const":"K-2SO"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_p9PfK77i4Qedmq0p7JFU0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Deterministically classifies an x402 buyer wallet as organic, suspected wash, self-test, or developer based on payment history and behavioral signals","exampleAgentPrompt":"Can you classify the x402 buyer wallet 0xABC123 as organic, suspected wash, self-test, or developer — I need the confidence score and the decision rule that was used?","exampleUseCases":[{"title":"Merchant vetting incoming buyer wallets","prompt":"Before I accept this payment, can you classify the buyer wallet 0xDEF456 on x402 — tell me if it looks organic or suspected wash, what confidence you have, and what evidence you found?"},{"title":"Marketplace fraud audit on repeat buyers","prompt":"I want to audit the buyer wallet 0x789GHI that's been making lots of small x402 payments — classify it as organic, self-test, wash, or developer and show me the decision rule and evidence blocks."},{"title":"Developer sandbox verification","prompt":"Can you check if wallet 0xJKL012 is flagged as a developer or self-test account in x402 rather than a real organic buyer? I need the label and confidence score."}],"resultDescription":"Returns a buyer label (organic, suspected wash, self-test, or developer), a confidence score, the specific decision rule applied, and structured evidence blocks supporting the classification. Also includes a prose brief suitable for agent consumption and metadata about the generation source (deterministic/llm/reasoning).","failureModes":["Missing or invalid buyer wallet address returns an error","Insufficient payment history may result in low confidence score","Self-pay loop detection may produce false positives for legitimate test wallets","Endpoint returns metadata JSON for free when ?meta=1 is set, not the paid classification result","Payment not received results in 402 response requiring x402 payment flow"],"whenToPreferThis":"Use this endpoint when you need per-buyer behavioral classification on the x402 network — specifically to distinguish organic buyers from wash traders, developers, or self-testers at the wallet level. Prefer this over ledger-level wash detection when you need a per-buyer label with confidence scores and traceable decision rules rather than aggregate ledger analysis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T01:41:01.436Z","isFirstParty":false,"canonicalSlug":"x402-buyer-behavior-classification-f38189ac"}