# StableJack Market Candle Data API

> StableJack Market Candle Data API is a paid API for AI agents from ai.stable-jack.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Retrieves OHLCV (open, high, low, close, volume) market candle data for crypto or financial instruments via StableJack's agent-ready research API.

## Facts

- Endpoint: POST https://ai.stable-jack.com/x402/tools/market_candle_data
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablejack-market-candle-data-api-f4e0f772
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xca72G46zWcrANLnlmuxa

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 stablejack-market-candle-data-api-f4e0f772 -d '<json body>'
```

Example prompt: Pull hourly candle data for BTC/USDT from StableJack for the last 7 days so I can run a technical analysis on the price action.

## When to prefer this

Choose this endpoint when you need structured OHLCV candlestick market data for crypto assets and want an agent-native, pay-per-call API with x402 payment support. Prefer it over generic market data providers when your agent stack already uses StableJack's research API suite, or when you want to combine candle data with sibling endpoints like technical indicators, funding rates, or oracle intelligence in the same workflow.

## Known failure modes

- Invalid or unsupported trading symbol returns an error or empty result
- Unsupported candle interval/period length returns a validation error
- Time range out of available history returns empty or partial data
- Payment failure (insufficient USDC) results in a 402 response blocking data access
- Rate limiting or overload may return a timeout or 429 error

## Output

Returns a series of OHLCV market candle records for the requested symbol and interval, including open, high, low, close prices and trading volume per candle, timestamped for the requested period.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablejack-market-candle-data-api-f4e0f772/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ai.stable-jack.com](https://www.zero.xyz/host/ai.stable-jack.com/llms.txt)