# QuantX402 Kronos Forecast – 4h Candlestick Signal

> QuantX402 Kronos Forecast – 4h 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 4-hour Kronos candlestick model forecast for a crypto pair, including directional signal, confidence bucket, volatility-based price range, invalidation level, and per-step percentiles.

## Facts

- Endpoint: GET https://quantx402.app/api/v1/forecast/4h?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-4h-candlestick-signal-c05fdfba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5Tcjb5KzqwWw6_fJ59eQ5

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-4h-candlestick-signal-c05fdfba
```

Example prompt: What does the Kronos model say about BTC-USD right now on the 4-hour timeframe — give me the directional signal, confidence level, expected price range, and where the trade would be invalidated?

## When to prefer this

Use this endpoint when you need a structured, machine-readable 4-hour candlestick model forecast for major crypto pairs, especially when you require a confidence bucket, invalidation level, and percentile range alongside the directional signal. Prefer this over the on-demand or other-timeframe endpoints when specifically targeting the 4h interval with supported symbols.

## Known failure modes

- Unsupported symbol returns an 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 causes a 400 error
- Payment not provided or insufficient USDC triggers an x402 payment-required response
- Model may return low-confidence signals during highly volatile or illiquid market conditions
- Forecast is experimental and not calibrated — outputs may be unreliable

## 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: 4h.

## Output

A JSON fact list containing: directional signal (bullish/bearish/neutral), confidence bucket, volatility-based expected price range, invalidation level, and per-step percentile forecasts for the requested crypto pair over the 4-hour timeframe.

## 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-4h-candlestick-signal-c05fdfba/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)