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Live Merchant Inference-Cost Index: Probe-Grounded Composite
x402
Live Merchant Inference-Cost Index: Probe-Grounded Composite 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 brief on LLM-inference merchant costs via x402/MPP rails, covering effective per-token prices, markup over raw model price, corpse detection, and a fallback ladder of cheaper equivalent offers.
Price / call$0.002
Success—
StatusUnknown
How this service works
Paid agent-facing brief on Live merchant inference-cost index: probe-grounded composite index of x402/MPP LLM-inference merchants with per-token effective price, markup versus raw model price, corpse detection, and a fallback ladder of cheaper equivalent offers. Distinct from raw model-pricing snapshots (covers merchant billed price, not sticker price) and from the fee index (rails, not inference). · Build a decision proced-0. Blunt decision procedure, not marketing.
Output
Returns a JSON object with a plain-prose decision procedure (120+ words) covering: effective per-token billed prices for active x402/MPP LLM-inference merchants, markup versus raw model price, corpse detection status for each merchant, and a prioritized fallback ladder of cheaper equivalent options. Also includes the generation timestamp, model used, and generation source (llm, reasoning, or deterministic).
Example use cases
Cheapest inference merchant selection
“Before I make my next batch of LLM calls, pull the live merchant inference-cost index and tell me which x402 merchant has the lowest effective per-token price right now, including any markup over raw model sticker price.”
Dead merchant corpse detection
“I think one of the inference merchants I've been using on x402 rails has gone dark — can you check the live merchant index for corpse detection flags and tell me which providers are still active?”
Fallback ladder for cost spikes
“My primary inference merchant just got expensive — use the live probe-grounded inference-cost index to give me a ranked fallback ladder of cheaper equivalent x402 merchants I can switch to immediately.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/live-merchant-inference-cost-index-probe-grounde?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs live, merchant-billed (not sticker) per-token pricing across x402/MPP inference providers, including markup analysis, liveness/corpse detection, and a structured fallback recommendation — as opposed to raw model pricing snapshots or rail fee indexes. Prefer this over static pricing databases when you need current probe-verified data and a blunt, actionable decision procedure rather than marketing material.
Side effects
- Payment not received or x402 payment flow incomplete — returns unpaid/unauthorized response
- Service handler error — ok:false in result object with no brief returned
- No active merchants detected — index may return empty fallback ladder
- LLM generation failure — generationSource may fall back to deterministic with reduced detail
- Invalid queryParams values — schema validation error if non-enum values supplied for meta field
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": "live-merchant-inference-cost-index-probe-grounde",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "live-merchant-inference-cost-index-probe-grounde",
"provider": "K-2SO"
}
}Tags
x402
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