# QuantX402 Kronos Forecast – 15m Candlestick Signal

> QuantX402 Kronos Forecast – 15m Candlestick Signal 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 15-minute Kronos candlestick model forecast signal for a crypto pair, including direction, confidence bucket, volatility-based price range, invalidation level, and per-step percentiles.

## Facts

- Endpoint: GET https://quantx402.app/api/v1/forecast/15m?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantx402-kronos-forecast-15m-candlestick-signal-106b2e93
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vJ8d4zq9xRGBpobe5_N94

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability quantx402-kronos-forecast-15m-candlestick-signal-106b2e93
```

Example prompt: What does the Kronos model signal for BTC-USD right now on the 15-minute timeframe — give me the direction, confidence bucket, and invalidation level?

## When to prefer this

Choose this endpoint when you need a fast, low-cost ($0.02) 15-minute candlestick model signal for one of the top supported crypto pairs (BTC, ETH, SOL, XRP, BNB, DOGE, ADA, AVAX, LINK, SUI) and want structured JSON output with direction, confidence, range, invalidation, and percentiles. Prefer the on-demand endpoint for unsupported or exotic crypto pairs, the stocks endpoint for US equities, and the 1h/4h/1d sibling endpoints for longer timeframes.

## Known failure modes

- Unsupported symbol returns error — only BTC-USD, ETH-USD, SOL-USD, XRP-USD, BNB-USD, DOGE-USD, ADA-USD, AVAX-USD, LINK-USD, SUI-USD are supported on this endpoint
- Missing required 'symbol' query parameter returns 400 bad request
- Payment failure or insufficient USDC balance blocks the call (x402 pay-per-call at $0.02)
- Model may be experimental and uncalibrated — forecast accuracy is not guaranteed
- Stocks and forex symbols are not supported here; use /api/v1/stocks/forecast or /api/v1/forecast/on-demand instead

## 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. Timeframe: 15m.

## Output

A JSON fact list containing the forecasted price direction (bullish/bearish/neutral), a confidence bucket (e.g. low/medium/high), a volatility-based expected price range, an invalidation level (price at which the signal is no longer valid), and per-step percentile projections for the 15-minute interval.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "tf": {
       "enum": [
        "15m",
        "1h",
        "4h",
        "1d"
       ],
       "type": "string",
       "description": "Candle timeframe"
      },
      "symbol": {
       "enum": [
        "BTC-USD",
        "ETH-USD",
        "SOL-USD",
        "XRP-USD",
        "BNB-USD",
        "DOGE-USD",
        "ADA-USD",
        "AVAX-USD",
        "LINK-USD",
        "SUI-USD"
       ],
       "type": "string",
       "description": "Crypto pair (BTC-USD, ETH-USD, SOL-USD, XRP-USD, BNB-USD, DOGE-USD, ADA-USD, AVAX-USD, LINK-USD, SUI-USD). US stocks & ETFs: /api/v1/stocks/forecast. Any other symbol: /api/v1/forecast/on-demand"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quantx402-kronos-forecast-15m-candlestick-signal-106b2e93/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from quantx402.app](https://www.zero.xyz/host/quantx402.app/llms.txt)