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Historical downloads failing

vijoeyz
vijoeyz in API clients
There were several downloading failures since yesterday due to Cloudflare outages.

kite.historical_data() API returned the following (excerpt shown) with an DataException.

"There is an internal server error on Cloudflare\'s network."
< href="https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_500&utm_campaign=api.kite.trade" target="_blank" rel="noopener noreferrer"> Cloudflare\n </>\n \n \n Error\n \n
Please comment on the latest state of this issue.
  • vijoeyz
    vijoeyz
    It appears that the 60-minute F&O contracts download is failing for me. Examples that fail to download are:
    "token": 9485826,
    "symbol": "NIFTY25NOVFUT",
    "from_date": "2025-06-20 09:15:00",
    "to_date": "2025-07-28 15:30:00",
    "interval": "60minute",
    "token": 23188994,
    "symbol": "IDFCFIRSTB25NOV74PE",
    "from_date": "2025-06-20 09:15:00",
    "to_date": "2025-07-28 15:30:00",
    "interval": "60minute"
    Whereas, the following download is successful: 
      "token": 9485826,
      "symbol": "NIFTY25NOVFUT",
      "from_date": "2025-11-09 09:15:00",
      "to_date": "2025-11-14 15:30:00",
      "interval": "minute",
    Please suggest if there is a backend issue? Is it only with my API key?
  • salim_chisty
    salim_chisty
    You can download the historical data for F&O contracts using continuous data. Continuous data is available only for FUTURE contracts, but not for the options contract. Continous data is only available for the day candle, not for intraday candle minute. You can check out the historical data API documentation here.
  • vijoeyz
    vijoeyz
    I don't want continuous. Please let me know why there is a failure in downloading 60-minute data.
  • vijoeyz
    vijoeyz
    Please let me know if you need any debugging data to determine why I have consistent failures in downloading 60-minute NIFTY25NOVFUT, whereas 1-minute NIFTY25NOVFUT is always successful. For 60-minute, the download API simply returns [].
  • vijoeyz
    vijoeyz
    Can you also check this? https://kite.trade/forum/discussion/15605/missing-historical-data#latest

    Could you please check with the backend team if the 60-minute F&O data is missing as well?
  • salim_chisty
    salim_chisty
    @vijoeyz Kite Connect does not provide historical data outside the lifecycle of a futures contract. Historical candles are available only for the period during which the contract was actively listed and trading. Any request for a date range before the contract’s listing date, the API will return an empty response []. You are fetching the data for the NIFTY25NOVFUT contract for 60 minutes before the contract becomes available for trading i.e from after the August expiry. Please change the to_date and from_date timeframe to fetch the 60-minutes time interval historical data.

    You can download the historical data for F&O contracts using continuous data. Continuous data is available only for FUTURE contracts, but not for the options contract. Continuous data is only available for the day candle, not for intraday candle minute.
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