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Kronos Signals VWM Spot Price API
x402
Kronos Signals VWM Spot Price API is a paid API for AI agents from kronossignals.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Returns a volume-weighted median spot price for a given crypto asset, aggregated from Binance, Coinbase, Kraken, and OKX with outlier rejection and confidence grading.
Price / call$0.02
Success—
StatusUnknown
How this service works
Multi-source volume-weighted median (VWM) spot price for 16 crypto assets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AVAX/LINK/DOT/LTC/TRX/BCH/ATOM/NEAR/APT). Aggregates Binance, Coinbase, Kraken, and OKX in parallel (2 s timeout per source). Includes 1% outlier rejection, cross-exchange spread %, confidence grading (high/medium/low), and per-source USD volume weights. Kaiko-style reference pricing — $0.02/call.
Output
Returns a volume-weighted median (VWM) USD spot price for the requested crypto asset, aggregated from up to four exchanges (Binance, Coinbase, Kraken, OKX) with a 2-second timeout per source. Response includes: the VWM price, cross-exchange spread percentage, a confidence grade (high/medium/low), per-source USD volume weights used in the calculation, and notes on any outliers rejected via the 1% outlier filter.
Example use cases
Risk management trade sizing check
“Before I execute this large SOL position, can you grab me a multi-source reference price for Solana with the confidence grade and spread? I want to make sure the price I'm seeing on my exchange isn't an outlier before I size in.”
Cross-exchange arbitrage opportunity detection
“Check the current volume-weighted median price for ETH across Binance, Coinbase, Kraken, and OKX and tell me the cross-exchange spread percentage — I'm trying to spot any arbitrage windows right now.”
Portfolio fair value snapshot
“I need a clean fair-value benchmark for BTC, ETH, and BNB right now — pull the aggregated consensus price for each with confidence grades so I can mark my portfolio at a manipulation-resistant reference price.”
Technical details
Endpoint
GEThttps://kronossignals.com/api/v1/price/btcWhen to prefer
Prefer this endpoint when you need a robust, manipulation-resistant reference price for a major crypto asset that accounts for exchange-specific volume and rejects outliers. Ideal as a Kaiko-style fair-value benchmark rather than a single-exchange price. Best when confidence grading and spread visibility matter, e.g. for trade sizing, risk management, or cross-exchange arbitrage detection. Choose over a single-exchange price feed when you need multi-source validation and a trust score on the price.
Side effects
- Insufficient sources available (fewer than 2 exchanges respond within 2s timeout) — may return low confidence or error
- Unsupported asset ticker — returns 404 or error if asset not in the 16 supported list
- All source exchanges timeout — no price returned
- Payment not processed (x402) — 402 response requiring USDC payment
- Rate limiting or network errors from upstream exchanges causing degraded confidence
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"as_of": "2026-07-02T10:00:00.000Z",
"asset": "BTC-USD",
"price": 107500,
"sources": [
{
"price": 107510,
"volume": 1200000000,
"exchange": "binance",
"included": true,
"vol_weight": 0.45
},
{
"price": 107490,
"volume": 800000000,
"exchange": "coinbase",
"included": true,
"vol_weight": 0.3
},
{
"price": 107500,
"volume": 400000000,
"exchange": "kraken",
"included": true,
"vol_weight": 0.15
},
{
"price": 107480,
"volume": 270000000,
"exchange": "okx",
"included": true,
"vol_weight": 0.1
}
],
"confidence": "high",
"disclaimer": "Volume-weighted median price from up to 4 exchanges. Informational only, not financial advice.",
"data_age_seconds": 0,
"outliers_rejected": 0,
"price_simple_median": 107480,
"cross_exchange_spread_pct": 0.08
}
}Tags
x402
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