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Pre-Trade Cost Commitment Verification Standard
x402
Pre-Trade Cost Commitment Verification Standard 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).
Deterministically verifies that a financial analysis or quote purchase via x402 v2 payments is price-conformant, token/network-valid, fresh, and settlement-bound before influencing any trade decision.
Price / call$0.002
Success—
StatusDown
How this service works
Deterministic procedure for agents that buy financial analysis or quotes over x402 v2 payments before the analysis may influence a trade decision. Covers: offered-versus-charged price conformance, token and network checks against the quote, quote freshness limits, and settlement-evidence binding to the exact purchase. Outputs a pass, a conditional pass with evidence, or a refusal with the failing check named. Run before paying, not after.
Output
Returns a JSON object with a boolean 'ok' field, a 'paid' flag, and a 'result' object containing: a boolean success indicator, a 'brief' string with decision procedure prose for agents, the service slug, the topic, generation source (llm/reasoning/deterministic), and an ISO-8601 timestamp. On failure, the specific failing check is named. The verdict is one of: pass, conditional pass with evidence, or refusal.
Example use cases
Pre-trade quote price conformance check
“I just paid for a stock quote via x402 and I want to confirm the amount charged exactly matches what was offered before I use it to make a trade decision — can you run the pre-trade cost commitment verification and tell me if it passes?”
Settlement evidence binding audit
“Before my agent acts on this paid financial analysis, verify that the settlement evidence is properly bound to this exact purchase and that the quote hasn't expired — give me a verdict with the failing check named if anything's wrong.”
Token and network validity before trade execution
“Check that the token and network in the x402 payment for this market analysis match what was quoted, and tell me whether it's safe to proceed with the trade or if I should refuse based on a specific failed check.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/pre-trade-cost-commitment-verification-for-marke?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent is about to act on financial analysis or a market quote that was purchased via x402 v2 payments, and you need a deterministic, auditable gate — not a probabilistic heuristic — before the purchased content influences any trade decision. Prefer this over generic payment validators when you specifically need offered-vs-charged price conformance, token/network validation against the quote, quote freshness enforcement, and settlement-evidence binding all checked atomically in one call, and you need a named failing check for auditability rather than just a boolean result.
Side effects
- Price mismatch between offered and charged amount — returns refusal with 'price-conformance' check named
- Token or network in payment does not match the quote — returns refusal with 'token-network' check named
- Quote has exceeded freshness limits — returns refusal with 'quote-freshness' check named
- Settlement evidence not bound to the exact purchase — returns refusal with 'settlement-binding' check named
- Payment not detected or unpaid — returns 402 response requiring payment before verification proceeds
- Malformed input parameters — returns validation 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": "pre-trade-cost-commitment-verification-for-marke",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "pre-trade-cost-commitment-verification-for-marke",
"provider": "K-2SO"
}
}Tags
x402
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