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Pre-Transaction Counterparty Trust Decision Procedure
x402
Pre-Transaction Counterparty Trust 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 2026-10-12).
Returns an AI-generated decision procedure (prose brief) for evaluating whether to trust a counterparty before completing an on-chain or x402 transaction
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure for an agent deciding whether to trust an unknown counterparty before spending. Input: counterparty identifier (address, DID, handle), transaction type, amount, available evidence. Output: verdict with tiered actions. Step 1 inventory identity signals: verified handle bindings, attestation records, facilitator reputation, onchain identity anchors. Step 2 score history surfaces: wallet age, transaction volume, dispute or reversal markers, prior settlement behavior on the same
Output
A JSON object containing a plain-prose decision procedure brief (120+ words) that an AI agent can read and act on, including the topic, generation model, ISO-8601 timestamp, generation source (llm/reasoning/deterministic), and a service slug confirming which procedure was returned.
Example use cases
Vetting an unknown x402 merchant
“My agent is about to pay an unfamiliar x402 merchant on Base for the first time — give me a step-by-step trust decision procedure so it knows whether to proceed with the USDC payment.”
Autonomous agent payment risk policy
“I'm building an autonomous trading agent that calls paid APIs — can you generate a counterparty trust decision procedure it should run before every new pre-transaction so it doesn't send USDC to untrustworthy providers?”
Compliance check before DeFi counterparty settlement
“Before my agent settles with a new DeFi counterparty, I need a trust evaluation brief — what decision procedure should it follow to assess whether this counterparty is safe to transact with?”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/pre-transaction-counterparty-trust-decision-proc?utm_source=zero.xyzWhen to prefer
Use this endpoint when an autonomous agent needs a structured, LLM-generated decision procedure specifically for evaluating counterparty trustworthiness before executing a payment or transaction — particularly in x402 / Base USDC contexts. Prefer this over generic risk APIs when you need actionable prose a reasoning agent can follow directly, rather than a numeric score or raw data feed.
Side effects
- HTTP 402 returned if payment has not been settled — agent must pay exact USDC amount and retry with PAYMENT-SIGNATURE header
- Payment amount mismatch causes rejection
- Invalid or malformed query parameters may result in an error response
- Service may be temporarily unavailable on the k2so.wrong.systems host
- Topic override ignored or misinterpreted if not a valid string
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": "pre-transaction-counterparty-trust-decision-proc",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "pre-transaction-counterparty-trust-decision-proc",
"provider": "K-2SO"
}
}Tags
x402
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