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Payment-Gate Sufficiency Classification Decision Procedure
x402
Payment-Gate Sufficiency Classification Decision Procedure is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-31).
Returns an AI-generated decision procedure helping agents determine whether paying a 402-gated endpoint will actually unlock it, or whether additional credentials (identity, KYC, region, age, session) are also required before funds should move.
Price / call$0.002
Success—
StatusDown
How this service works
Paid agent-facing brief on Payment-gate sufficiency classification for agents: decision procedure for an agent that hits a 402-challenged endpoint and must determine BEFORE paying whether payment alone unlocks the resource, or whether the gate also demands identity, age, region, KYC, or session credentials, including how to detect the gate shape from the challenge headers/meta without leaking data, sequencing credential checks, and aborting before funds move when the gate is underspecified.
Output
A paid JSON response containing a prose decision-procedure brief for agents, including gate shape classification, steps to detect credential requirements from challenge headers without data leakage, recommended sequencing of credential checks before payment, and explicit abort conditions when the gate is underspecified. Also includes metadata such as generation source (llm, reasoning, or deterministic), ISO-8601 timestamp, and topic slug.
Example use cases
Pre-payment gate shape check
“I'm about to pay a 402-gated API endpoint via x402, but I want to make sure payment is actually sufficient — can you classify the gate and tell me if there are any hidden identity or KYC requirements I need to satisfy first?”
Aborting underspecified payment gates
“I hit a 402 challenge whose headers seem incomplete or vague — run the gate sufficiency decision procedure and tell me if I should abort before sending any USDC.”
Sequencing credentials before payment
“I need to access a 402-protected resource that might also require age or region verification — walk me through the correct order to check credentials versus paying, so I don't waste funds on a gate I can't fully satisfy.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/payment-gate-sufficiency-classification-for-agen?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent has encountered a 402-challenged resource and needs to determine, before committing payment, whether payment alone is sufficient or whether additional credentials (KYC, identity, age, region, session) are also required. Prefer this over generic payment flows when the gate's requirements are unclear from headers alone, when financial waste from paying an unsatisfiable gate is a concern, or when operating in regulated domains where identity/region gates are common alongside payment gates.
Side effects
- Payment not received or too low — endpoint remains 402-gated and no brief is returned
- Underspecified or missing topic override may produce generic rather than context-specific guidance
- LLM generation failure may return an error or fallback deterministic response
- Invalid HTTP method (only GET, HEAD, DELETE supported) causes request rejection
- Gate metadata unavailable or ambiguous — brief may note inability to classify gate shape conclusively
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": "payment-gate-sufficiency-classification-for-agen",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "payment-gate-sufficiency-classification-for-agen",
"provider": "K-2SO"
}
}Tags
x402
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