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x402 Crypto Market Data – Historical Klines
x402
x402 Crypto Market Data – Historical Klines is a paid API for AI agents from x402-crypto-market-data.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-13).
Returns historical OHLCV candlestick data for a given crypto trading pair over a specified time range and interval
Price / call$0.005
Success—
StatusUnknown
How this service works
On-demand crypto market data. Discover available trading pairs for free, then retrieve live prices, market metadata, and historical candlesticks when you need them.
Output
Returns a JSON object containing the requested symbol, interval, and an array of candlestick objects each with open_time, close_time, open_price, high_price, low_price, close_price, volume, quote_asset_volume, amount_trades, taker_buy_base_volume, and taker_buy_quote_volume fields.
Example use cases
Backtesting a trading strategy
“Fetch the 1-hour OHLCV candles for ETHUSDT from March 1, 2024 00:00 to March 31, 2024 00:00 — I need the full historical klines to backtest a moving average crossover strategy.”
Crypto price volatility analysis
“Get me the 15-minute candlestick data for SOLUSDT between January 15, 2024 00:00 and January 16, 2024 00:00 so I can analyze intraday price volatility.”
Daily chart review for reporting
“Pull the daily klines for BTCUSDT from the start of 2024 through June 30, 2024 00:00 — I'm building a price performance report and need the open, high, low, close, and volume for each day.”
Technical details
Endpoint
POSThttps://x402-crypto-market-data.up.railway.app/historical-klines?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need structured OHLCV candlestick history for a specific crypto trading pair over a defined time window. It is ideal for quantitative analysis, backtesting, charting, and reporting use cases where precise historical price data at a chosen interval (from 1-minute to monthly) is required. Prefer this over live price endpoints when the query is retrospective rather than real-time.
Side effects
- Invalid or unsupported trading symbol returns an error — use the free discovery endpoint first to validate pairs
- Malformed date/time format (not %Y-%m-%d %H:%M) causes a parse error
- Time range with no available data returns empty klines array
- Very large time ranges with short intervals may return partial results or be rejected
- Payment failure via x402 protocol results in 402 response and no data returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| symbol | string | Trading symbol, e.g. BTCUSDT. |
| to_time | string | End of the time range, format: %Y-%m-%d %H:%M |
| interval | string | Candlestick interval |
| from_time | string | Start of the time range, format: %Y-%m-%d %H:%M |
Output
Schema · Response
{
"type": "json",
"example": {
"klines": [
{
"volume": 125.5,
"low_price": 41800,
"open_time": "2024-01-01T00:00:00",
"close_time": "2024-01-01T01:00:00",
"high_price": 42500,
"open_price": 42000,
"close_price": 42200,
"amount_trades": 1250,
"quote_asset_volume": 5290000,
"taker_buy_base_volume": 60.3,
"taker_buy_quote_volume": 2541800
},
{
"volume": 118.2,
"low_price": 42100,
"open_time": "2024-01-01T01:00:00",
"close_time": "2024-01-01T02:00:00",
"high_price": 42800,
"open_price": 42200,
"close_price": 42600,
"amount_trades": 1180,
"quote_asset_volume": 5037600,
"taker_buy_base_volume": 58.1,
"taker_buy_quote_volume": 2479000
}
],
"symbol": "BTCUSDT",
"interval": "1h"
}
}Tags
x402
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