Normalized + gap-filled OHLCV candles API

Fetch OHLCV (open/high/low/close/volume) candles for a crypto pair from Binance public REST and return them as clean typed candles plus a gap report — every missing interval is detected and forward-filled with a flagged synthetic candle so charting and indicator code never breaks on holes. Answers 'give me 1h BTC-USD candles', 'are there any missing intervals in this price history', 'normalized OHLCV for ETH-USDT'.

Price$0.03per request

MethodPOST

Route/v1/markets/ohlcv

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache60s public

marketsohlcvcandlesklinescryptoprice-historybinancetrading

API URLhttps://x402.hexl.dev/v1/markets/ohlcv

Integration docs

Example request

{
  "pair": "BTC-USD",
  "interval": "1h",
  "limit": 3
}

Example response

{
  "pair": "BTC-USD",
  "symbol": "BTCUSDT",
  "interval": "1h",
  "requestedLimit": 3,
  "candles": [
    {
      "openTime": 1748736000000,
      "open": 67800.1,
      "high": 68120,
      "low": 67750.5,
      "close": 68010.2,
      "volume": 1423.55,
      "closeTime": 1748739599999
    },
    {
      "openTime": 1748739600000,
      "open": 68010.2,
      "high": 68300,
      "low": 67980,
      "close": 68240.7,
      "volume": 1110.32,
      "closeTime": 1748743199999
    },
    {
      "openTime": 1748743200000,
      "open": 68240.7,
      "high": 68410,
      "low": 68100,
      "close": 68155.9,
      "volume": 980.14,
      "closeTime": 1748746799999
    }
  ],
  "gaps": [],
  "count": 3,
  "filledCount": 0
}

Input schema

{
  "type": "object",
  "required": [
    "pair"
  ],
  "properties": {
    "pair": {
      "type": "string",
      "minLength": 3,
      "examples": [
        "BTC-USD",
        "ETH-USDT"
      ]
    },
    "interval": {
      "type": "string",
      "examples": [
        "1h",
        "15m",
        "1d"
      ]
    },
    "limit": {
      "type": "number",
      "minimum": 1,
      "maximum": 1000,
      "examples": [
        100
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}