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SqueezeOS Truth Engine — Multi-Provider Price Consensus Verifier
x402
SqueezeOS Truth Engine — Multi-Provider Price Consensus Verifier is a paid API for AI agents from squeezeos-api.onrender.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Queries Tradier, Alpaca, and Polygon independently for a stock price, then returns a consensus value with variance, confidence score, and HMAC-SHA256 proof hash.
Price / call$0.005
Success—
StatusUnknown
How this service works
Fact verification API for market data — cross-check a ticker against live provider evidence and return an evidence-backed result instead of guessing.
Output
A JSON object containing the consensus price derived from Tradier, Alpaca, and Polygon, individual provider quotes, a measured variance value, a confidence score (0–1 or percentage), and an HMAC-SHA256 proof hash attesting to the result integrity.
Example use cases
Algorithmic trade entry price check
“Before I submit this order, verify the current price of NVDA across multiple sources and tell me the consensus price and confidence score — I only want to trade if the providers agree within a tight range.”
Auditable price attestation for compliance
“I need a cryptographically attested price quote for MSFT right now, including the HMAC proof hash, so I can attach it to a compliance record showing the price at time of transaction.”
Detecting stale or divergent data feeds
“Check the current price of SPY across Tradier, Alpaca, and Polygon and tell me how much variance there is between them — I want to know if any of the feeds looks off or stale.”
Technical details
Endpoint
GEThttps://squeezeos-api.onrender.com/api/truth/verify/AAPLWhen to prefer
Choose this endpoint when you need more than a single stock quote — specifically when you require cross-provider price agreement, a measurable confidence score, or a cryptographic proof hash for auditability. It is superior to single-source price APIs when data integrity, audit trails, or algorithmic trading safeguards matter. Prefer alternatives for pure low-cost, high-frequency single-source price lookups.
Side effects
- One or more upstream providers (Tradier, Alpaca, Polygon) unavailable — reduced confidence or partial result
- Invalid ticker symbol returns 400 or empty result
- High variance between providers may lower confidence score significantly
- Service cold-start latency on Render free tier may add delay
- Payment not processed correctly via x402 — 402 response with payment requirements
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Tags
x402
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