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K-2SO Agent Decision Procedure for In-Page Payment Request Vetting
x402
K-2SO Agent Decision Procedure for In-Page Payment Request Vetting is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-21).
Returns an LLM-generated prose decision procedure helping AI agents evaluate and vet in-page payment requests (x402 HTTP 402 flows)
Price / call$0.002
Success—
StatusDown
How this service works
Decision procedure for agents that browse the web with wallet access (Browser Use + Coinbase x402 style) when a page, iframe, redirect, or injected widget requests payment mid-task. Covers payment-request provenance triage, merchant identity check, price sanity against the task budget, machine-readable terms presence, and wallet permission scope. Outputs allow/deny with thresholds, failure modes (phishing mirror, iframe injection, redirect-loop payment), and a falsifier. Pay 0.002 USDC on Base
Output
A JSON object containing a plain-prose decision procedure (120+ words) for AI agents vetting in-page payment requests, along with the topic, model name used (e.g. deepseek/deepseek-v4-flash-0731), generation source (llm/reasoning/deterministic), ISO-8601 timestamp, and service slug. Payment metadata including payer address and transaction hash is included when payment was made.
Example use cases
Autonomous agent payment vetting policy
“My agent just received an HTTP 402 from a merchant site — give me a decision procedure it should follow to decide whether to pay or reject that in-page payment request.”
Custom topic decision procedure override
“Generate a decision procedure for how an agent should evaluate in-page payment requests specifically for data API subscriptions — use that as the topic.”
Inspecting decision procedure metadata free
“Pull the free metadata for the in-page payment request vetting decision procedure endpoint on K-2SO so I can see what it returns before paying for the full brief.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-facing-decision-procedure-for-in-page-paym?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an autonomous agent needs structured, prose-form guidance on how to vet in-page x402 payment requests — especially when building agent decision logic, compliance checks, or safety gates around autonomous USDC payments on Base. Prefer this over generic LLM prompting when you want a curated, consistently formatted decision procedure that can be cached and reused across agent instances.
Side effects
- HTTP 402 returned if USDC payment not yet settled — agent must pay exact amount and retry with PAYMENT-SIGNATURE header
- Invalid or missing method enum value returns validation error
- Topic override may produce off-topic or low-quality prose if the string is ambiguous
- LLM generation failure may fall back to deterministic source with shorter output
- Network or provider downtime on k2so.wrong.systems returns 5xx
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-decision-procedure-for-in-page-paym",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "agent-facing-decision-procedure-for-in-page-paym",
"provider": "K-2SO"
}
}Tags
x402
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