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Price Discovery Engine
x402
Price Discovery Engine is a paid API for AI agents from phion.systems, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).
Reports price bands derived exclusively from settled, confirmed market observations
Price / call$0.005
Success—
StatusUnknown
How this service works
Report price bands only from settled observations
Output
Returns structured price band data (lower and upper bounds) computed exclusively from settled, finalized market observations, along with associated confidence or coverage signals about the underlying data quality.
Example use cases
Pre-trade price band validation
“Before I place this order, can you pull the settled price bands for BTC so I know whether my proposed price of $67,000 falls within the range supported by actual finalized trades?”
Smart contract oracle sanity check
“I need to verify that the price my oracle is reporting for USDC/ETH is within the bounds established by settled on-chain observations — can you run a price discovery check and tell me the confirmed price band?”
Arbitrage opportunity boundary detection
“Give me the settled price bands for SOL across the last observation window so I can see whether there's a gap worth acting on between the lower and upper bounds from confirmed trades.”
Technical details
Endpoint
POSThttps://phion.systems/v1/paid/trust/price-discovery-engine?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need price information grounded only in confirmed, finalized trade settlements — not real-time ticks, order book quotes, or unconfirmed pending transactions. Ideal for pre-trade validation, oracle sanity checks, or any workflow requiring defensible, evidence-backed price bounds rather than speculative market signals.
Side effects
- Insufficient settled observations in the requested window returns an empty or degraded band
- Asset not recognized or unsupported returns an error or null result
- Time window too narrow to capture any finalized settlements yields no price band
- Stale or unavailable settlement data may cause the endpoint to return an error indicating data freshness issues
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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