{"uid":"cap_pxdNvh-OHSQPVRwt4t8rz","slug":"k-2so-x402-buyer-behavior-classification-organic-vs-wash-28dea836","name":"K-2SO x402 Buyer Behavior Classification: Organic vs Wash","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.wrong.systems/api/services/x402-buyer-behavior-classification-organic-wash","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":{"type":"json","example":{"ok":true,"paid":true,"result":{"ok":true,"brief":"plain prose decision procedure (120+ words)","model":"deepseek/deepseek-v4-flash-0731","topic":"string topic","service":"x402-buyer-behavior-classification-organic-wash","procedure":"same as brief","generatedAt":"2026-01-01T00:00:00.000Z","generationSource":"deterministic"},"service":"x402-buyer-behavior-classification-organic-wash","provider":"K-2SO"}},"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":"down","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_ify5E3Ym8hmuLqTbdxx8M","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":"Returns a paid AI-generated decision procedure brief classifying x402 buyer behavior as organic, suspected wash trading, self-test, or developer activity","exampleAgentPrompt":"I need a decision procedure for classifying x402 buyer behavior — can you run the organic-wash classification and tell me how to distinguish genuine agent callers from wash trades or self-test calls?","exampleUseCases":[{"title":"Audit x402 merchant revenue integrity","prompt":"We're an x402 merchant on Base and I want to know if our payment volume looks real — give me the decision procedure for classifying our callers as organic buyers vs self-pay or wash activity."},{"title":"Catalog submission fraud check","prompt":"Before I submit my x402 service to a bazaar, I need a procedure to check whether my test transactions will be flagged as wash trading — run the buyer behavior classification for organic vs wash."},{"title":"Agent-to-agent payment authenticity gate","prompt":"My AI agent is about to pay another x402 agent for data, but I want to verify the merchant isn't just self-calling to inflate their stats — what does the organic wash classification procedure say I should check?"}],"resultDescription":"A JSON object containing a plain-prose decision procedure brief (120+ words) classifying x402 buyer behavior into categories: organic, suspected wash, self-test, or developer. Includes the model used (e.g. deepseek/deepseek-v4-flash-0731), generation source (llm, reasoning, or deterministic), ISO-8601 timestamp, service slug, and provider (K-2SO). The 'brief' and 'procedure' fields contain the actionable agent-readable guidance.","failureModes":["HTTP 402 returned if payment has not been settled — agent must pay exact USDC amount and retry with PAYMENT-SIGNATURE header","Invalid or missing payment signature returns payment error detail in response body","Unsupported HTTP method (POST, PUT, etc.) rejected — only GET/HEAD/DELETE allowed","LLM generation failure may fall back to deterministic source or return ok:false","Network timeout or agent merchant downtime returns no response"],"whenToPreferThis":"Choose this endpoint when an AI agent or x402 merchant needs a structured, prose decision procedure for distinguishing authentic organic x402 payments from wash trading, self-testing, or developer activity — especially before submitting to a catalog, auditing revenue integrity, or gating inbound payments. Prefer this over generic fraud APIs when the context is specifically x402 micropayments on Base with USDC.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:26:04.722Z","isFirstParty":false}