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Agent First-Purchase Merchant Trust Gate — Deterministic Decision Procedure
x402
Agent First-Purchase Merchant Trust Gate — Deterministic 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 2026-09-13).
Returns a deterministic decision procedure (plain-prose brief) an AI agent should follow when deciding whether to trust a merchant it has never purchased from before via x402.
Price / call$0.002
Success—
StatusUnknown
How this service works
Paid agent-facing brief on agent first-purchase merchant trust gate: deterministic procedure an agent runs before its first-ever x402 payment to an unfamiliar merchant, verifying contract completeness, disclosure honesty, refund/dispute path, identity anchor, with kill criteria and a single verdict. Blunt decision procedure, not marketing.
Output
A JSON object containing a plain-prose decision procedure (120+ words) under the `brief` and `procedure` fields, along with metadata: the topic, the service slug, the model used to generate it (e.g. deepseek-v4-flash), an ISO-8601 generatedAt timestamp, and a generationSource enum value (deterministic/llm/reasoning). The top-level response also confirms `ok: true`, `paid: true`, provider `K-2SO`, and the service identifier.
Example use cases
Vetting an unknown x402 API provider
“My agent is about to pay a brand-new x402 merchant for the first time and I want a step-by-step decision procedure it can follow to decide whether that first purchase is safe — can you run the merchant trust gate and return the full procedure?”
Building a first-purchase approval policy
“I'm coding an autonomous agent that buys x402 services and I want to hard-code a trust gate so it never just blindly pays a merchant it hasn't dealt with before — fetch me the deterministic first-purchase trust procedure so I can wire it into the agent's approval flow.”
Auditing agent spending guardrails
“I need to review the decision logic my agent should apply before making a first-ever purchase from any x402 provider — pull the agent first-purchase merchant trust gate procedure so I can check whether my current guardrails match the recommended steps.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-first-purchase-merchant-trust-gate-determiWhen to prefer
Choose this endpoint when an AI agent needs a portable, on-demand, machine-readable decision procedure specifically for evaluating first-time x402 merchant trust — especially when the agent has no prior purchase history with that merchant. Prefer it over manual policy lookups or hardcoded logic when you want a text procedure that can be injected directly into an agent's reasoning context before authorizing USDC payment.
Side effects
- HTTP 402 returned if USDC payment is not settled before retry — agent must pay exact amount and include PAYMENT-SIGNATURE header
- Invalid or missing `method` or `type` fields in input cause schema validation error
- Network timeout if Base/USDC settlement is slow
- Stale or cached procedure if the agent calls with a topic that maps to a pre-generated deterministic result
- Unknown topic override may yield a generic fallback procedure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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