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K-2SO x402 Payment Dispute Resolution Decision Procedure
x402
K-2SO x402 Payment Dispute Resolution Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Returns an AI-generated decision procedure (plain prose brief) for autonomous agents resolving x402 payment disputes, accessible via USDC micropayment on Base.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure for an agent on either side of a contested x402 payment: merchant failed to deliver, delivered partial or wrong content, double-charged, or went silent after taking payment. Ordered workflow: freeze evidence first (challenge body hash, payment tx hash, delivery receipt, request and response logs, timestamps), classify the dispute, run the recover-first ladder (idempotent re-request, re-negotiate, refund request, then escalate), and gate every escalation on a cost-benefit
Output
A JSON object containing a plain-prose decision procedure brief (120+ words) tailored to x402 payment disputes, including the AI model used, generation source (llm/reasoning/deterministic), topic, service slug, and an ISO-8601 generation timestamp. Also includes payment metadata confirming the USDC transaction.
Example use cases
Failed service delivery after payment
“My agent paid for an x402 API call in USDC on Base but the service returned an error instead of a result. Give me a step-by-step decision procedure for disputing this payment and deciding whether to retry, escalate, or write it off.”
Merchant overcharge dispute
“My autonomous agent was billed twice for a single x402 service call. I need a structured decision procedure to determine whether this qualifies as a disputable overcharge and what actions my agent should take next.”
Unresponsive x402 merchant arbitration
“My agent sent payment to an x402 merchant on Base but the merchant endpoint has gone dark and never responded. Can you generate a dispute resolution procedure covering how long to wait, what evidence to retain, and when to escalate?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-facing-x402-payment-dispute-resolution-pro?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an autonomous agent needs a structured, AI-generated decision procedure specifically for x402 micropayment disputes on Base/USDC — particularly when the agent lacks built-in logic for adjudicating failed payments, overcharges, or non-delivery scenarios. Prefer it over generic legal or payment dispute services when the context is agent-to-agent or agent-to-merchant x402 transactions.
Side effects
- HTTP 402 returned if no payment is attached — must settle exact USDC amount then retry with PAYMENT-SIGNATURE header
- Invalid or mismatched payment signature returns an auth failure
- Malformed input schema (missing required 'type' or 'method' fields) returns a 400-level error
- LLM generation failure may result in a fallback to deterministic generation source
- Topic override not recognized may default to generic dispute procedure
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": "agent-facing-x402-payment-dispute-resolution-pro",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "agent-facing-x402-payment-dispute-resolution-pro",
"provider": "K-2SO"
}
}Tags
x402
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