# QuantX402, powered by Kronos

> Kronos candlestick forecasts as agent-readable fact lists, paid per call with x402 (USDC, no account or API key). Probabilistic model output for research and education. Not financial advice. Past results do not guarantee future results.

Kronos is an open-source (MIT) foundation model for financial candlesticks by its original authors (arXiv 2508.02739). This service is not affiliated with them. Every hour, Kronos-small samples 30 future price paths per symbol from the last 360 closed 1h candles; we turn those paths into facts.

## API
- [GET /api/v1/forecast](https://quantx402.app/api/v1/forecast?symbol=BTC-USD&tf=1h): latest fact list, $0.02 per call via x402. Returns HTTP 402 with a PAYMENT-REQUIRED header until paid. Errors and stale data (2+ candles old) are never charged.
- [GET /api/v1/sample](https://quantx402.app/api/v1/sample?symbol=BTC-USD&tf=1h): free fact list, at least 2 hours old.
- [GET /api/v1/chart](https://quantx402.app/api/v1/chart?symbol=BTC-USD&tf=1h): free per-step percentiles, at least 2 hours old.
- [GET /api/v1/health](https://quantx402.app/api/v1/health): data freshness and worker status.
- [OpenAPI](https://quantx402.app/openapi.json): canonical machine-readable contract.
- [Usage stats](https://quantx402.app/stats): live request counts and track record.

Symbols: BTC-USD, ETH-USD. Timeframes: 1h.

## Optional
- [Full field reference](https://quantx402.app/llms-full.txt)