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QuantX402 Multi-Asset Market Signal API
x402
QuantX402 Multi-Asset Market Signal API is a paid API for AI agents from quantx402.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-20).
Returns a blended market forecast for a crypto symbol (BTC-USD, ETH-USD), including directional probability, expected move percent, 80% price band, and invalidation level.
Price / call$0.02
Success—
StatusUnknown
How this service works
Kronos Forecast: the Kronos candlestick model signal for one symbol and interval as a standard JSON fact list (direction, confidence bucket, volatility-based range, invalidation level, per-step percentiles). Live: BTC-USD, ETH-USD 1h; stocks, forex and commodities rolling out. Experimental, not calibrated. Not financial advice.
Output
A JSON object containing: symbol (e.g. BTC-USD), prob_up (0–1 probability price moves up), direction (UP or DOWN), band_80_pct (low and high percentage bounds of the 80% confidence price range), expected_move_pct (expected percentage price move), and invalidation_level (price level at which the forecast is considered invalidated).
Example use cases
Pre-trade directional bias check
“Before I place a BTC trade, what's the current 1h forecast for BTC-USD — is it more likely to go up or down, and what's the probability?”
Ethereum volatility range for risk sizing
“I need to size my ETH position — what's the 80% price band and expected move percent for ETH-USD on the 1-hour timeframe right now?”
Automated crypto signal monitoring
“Check the QuantX402 forecast for BTC-USD and alert me if the probability of an upward move drops below 50% or the invalidation level is within 1% of current price.”
Technical details
Endpoint
GEThttps://quantx402.app/api/v1/forecast?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, pre-computed, machine-readable market signal for BTC-USD or ETH-USD that combines directional probability, volatility bands, and invalidation levels in a single call — especially useful for AI trading agents making autonomous decisions or for pre-trade analysis workflows that need structured JSON output rather than raw price data.
Side effects
- Unsupported symbol returns an error — currently only BTC-USD and ETH-USD are live
- Missing required 'symbol' query parameter causes a 400-level error
- Payment failure via x402 (insufficient USDC balance or wallet not set up) blocks the response
- Timeframe enum value other than '1h' may be rejected or ignored
- Stale or unavailable upstream market data may affect forecast freshness
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"symbol": "BTC-USD",
"prob_up": 0.933,
"_example": "EXAMPLE output for illustration only (captured/synthetic values); not live or current data. Not financial advice.",
"direction": "UP",
"band_80_pct": [
0.39,
1.418
],
"expected_move_pct": 0.737,
"invalidation_level": 82954.2
}
}Tags
x402
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