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Upto Ceiling Authorization Standard
x402
Upto Ceiling Authorization Standard is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-19).
Returns a decision procedure and JSON schema for handling x402 'upto X' priced offers, classifying ceiling types and specifying authorization, reconciliation, and refusal rules.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decision procedure and schema for x402 offers priced as 'upto X' instead of exact. Classifies the ceiling as cap, estimate, or quote. Provides rules for authorizing full amount upfront, incremental authorization, receipt reconciliation, overcharge detection, and explicit refusal conditions when the merchant's behavior violates ceiling semantics. Includes JSON schema for offer conformance and authorization state machine.
Output
A JSON object containing plain-prose decision procedure text (120+ words), ceiling classification rules, authorization state machine, offer conformance JSON schema, overcharge detection logic, and explicit refusal conditions — along with metadata such as generation source, timestamp, and model used.
Example use cases
Ceiling classification before first payment
“I just got an x402 offer priced as 'upto 0.10 USDC' and I'm not sure if that's a hard cap, an estimate, or a quote — can you give me the decision procedure so I know how to classify it and what authorization strategy to use?”
Overcharge detection after merchant charges
“The x402 merchant charged me 0.08 USDC but the offer said 'upto 0.05 USDC' — give me the procedure for detecting whether this is a ceiling violation and whether I should flag it as an overcharge or refuse reconciliation.”
Incremental authorization state machine for upto offers
“My agent is handling a high-value x402 workflow where several services use upto pricing — I need the full state machine rules for incremental authorization and receipt reconciliation so I don't over-commit funds or get stiffed by ceiling violations.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/upto-ceiling-authorization-standard?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your agent needs authoritative, structured decision rules for x402 'upto X' ceiling-priced offers specifically — including ceiling type classification, upfront vs incremental authorization logic, receipt reconciliation, and refusal conditions. Prefer this over generic x402 documentation when you need a machine-readable JSON schema and state machine rather than free-form guidance.
Side effects
- Missing or malformed required input fields returns a validation error
- Payment not included or insufficient results in a 402 response requiring x402 payment
- Invalid topic override may cause unexpected procedure scope
- LLM-generated procedures may vary slightly between calls if generationSource is 'llm'
- Network or service unavailability returns a non-200 error
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": "upto-ceiling-authorization-standard",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "upto-ceiling-authorization-standard",
"provider": "K-2SO"
}
}Tags
x402
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