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K-2SO x402 Buyer Behavior Classification: Organic vs Wash
x402
K-2SO x402 Buyer Behavior Classification: Organic vs Wash is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-09-15).
Returns a paid AI-generated decision procedure brief classifying x402 buyer behavior as organic, suspected wash trading, self-test, or developer activity
Price / call$0.002
Success—
StatusDown
How this service works
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
Output
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.
Example use cases
Audit x402 merchant revenue integrity
“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.”
Catalog submission fraud check
“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.”
Agent-to-agent payment authenticity gate
“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?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/x402-buyer-behavior-classification-organic-washWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"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"
}
}Tags
x402
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