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K-2SO Agent-Facing Decision Procedure for Ground-Truth Verification
x402
K-2SO Agent-Facing Decision Procedure for Ground-Truth Verification is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Returns a paid LLM-generated decision procedure brief helping AI agents verify ground truth for decentralized paid responses via x402
Price / call$0.002
Success—
StatusUnknown
How this service works
Paid agent-facing brief on agent-facing decision procedure for ground-truth verification of decentralized data (oracle/feed/stream quality vetting before an agent pays for or acts on it)-0. Blunt decision procedure, not marketing.
Output
Returns a JSON object containing: a plain-prose decision procedure brief (120+ words) the calling agent can directly consume, the topic the procedure was generated for, the model used (e.g. deepseek/deepseek-v4-flash-0731), generation source (llm/reasoning/deterministic), ISO-8601 timestamp, service slug, and payment confirmation fields including payer address and transaction hash.
Example use cases
Validating paid x402 API responses
“My agent just received a paid response from an x402 merchant on Base and I need a structured decision procedure it can follow to verify the response is legitimate and trustworthy — can you generate that brief?”
Building an agent trust framework
“I'm building an autonomous agent that pays for data via x402 and I need a reasoning guide it can apply every time it evaluates whether a paid result actually reflects ground truth — generate the decision procedure for that.”
Override topic for custom verification scenario
“Generate a decision procedure for my agent to verify ground truth specifically for 'on-chain price feed authenticity from x402 merchants' — I need the full prose brief it can use.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/agent-facing-decision-procedure-for-ground-truthWhen to prefer
Choose this endpoint when an autonomous agent needs a structured, LLM-generated reasoning guide specifically for verifying ground truth in the context of x402 decentralized paid responses. Prefer it over generic LLM calls when you want a pre-scoped, reproducible decision procedure tied to the x402 payment ecosystem, with on-chain payment provenance. Especially useful when building agent pipelines that need consistent verification logic without spinning up their own LLM reasoning chain.
Side effects
- HTTP 402 returned if USDC payment is not settled — agent must pay exact amount and retry with PAYMENT-SIGNATURE header
- Invalid or malformed query parameters return error response
- Topic override too vague may produce generic rather than targeted procedure
- meta=1 returns free metadata JSON instead of paid decision procedure content — agent must not mistake this for the paid result
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-ground-truth",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "agent-facing-decision-procedure-for-ground-truth",
"provider": "K-2SO"
}
}Tags
x402
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