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Catalog Pin Drift Adjudicator
x402
Catalog Pin Drift Adjudicator 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).
Adjudicates whether a pinned catalog endpoint selection is still valid before authorizing x402 payment, checking for drift in price, schema, capability, or merchant identity, and emitting a pay/re-quote/abandon decision with structured reasons and evidence hash.
Price / call$0.002
Success—
StatusDown
How this service works
Decision procedure for an agent that pins a catalog endpoint selection and binds it to an x402 quote, then checks for drift in price, schema, capability, or merchant identity before authorizing payment. Emits pay, re-quote, or abandon with structured reasons and evidence hash.
Output
Returns a structured decision object containing an ok/pay/re-quote/abandon verdict, a prose brief explaining the reasoning, the service slug, generation source (llm/reasoning/deterministic), ISO-8601 timestamp, and payment metadata including transaction hash and payer details.
Example use cases
Pre-payment drift check on pinned catalog endpoint
“I pinned a catalog endpoint an hour ago and now I'm about to pay — run the drift adjudicator to see if the price or merchant identity has changed and whether I should still go ahead with the x402 payment.”
Schema change detection before agent service call
“My agent pinned a service catalog entry this morning, but I want to confirm the API schema hasn't changed before it authorizes the payment — can you run a drift check and tell me if it's safe to proceed or if we need to re-quote?”
Merchant identity verification before agentic payment
“Before my autonomous agent pays for this x402 catalog service, verify that the merchant identity matches what was recorded when I pinned it, and give me a structured reason and evidence hash if anything looks off.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/catalog-pin-drift-adjudicatorWhen to prefer
Use this endpoint when an autonomous agent has already pinned a catalog endpoint and bound it to an x402 quote, and needs a structured adjudication before committing payment — especially when time has elapsed since pinning, when operating in high-stakes or automated payment flows, or when merchant identity assurance is required. Prefer this over manual re-quoting logic when you need a single authoritative pay/re-quote/abandon signal with an auditable evidence hash.
Side effects
- Missing or malformed pinned catalog reference returns validation error
- Quote has expired and re-quote is required, returning re-quote directive
- Merchant identity mismatch triggers abandon with evidence hash and structured reason
- Price drift beyond acceptable threshold returns re-quote with delta details
- Schema incompatibility detected returns abandon with structured capability diff
- Service unavailable at k2so.wrong.systems returns non-ok 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": "catalog-pin-drift-adjudicator",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "catalog-pin-drift-adjudicator",
"provider": "K-2SO"
}
}Tags
x402
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