APIs not working for Options on Paper Accounts

Alpaca Trading
1

Both my bots and my dashboard are getting 404 errors when trying to retrieve the options chain. If I go into my live dashboard I can get them.

2

@DougFish What request are you making, including the parameters? About what time did you make the request(s)? I can check the logs and maybe see what is going on.

3

Hi Dan, I was about to report back that my bot is working so the APIs are in working (option chain most importantly). But my dashboard is still wonky, no option chain data for QQQ and the occasional red error message saying 404 error. But this is not happening on my live account. check both my phone and my computer.

4

Hi Dan,

I have the exact same issue. I am using the postman to test my paper account

. here is the URL I am using and it is giving me 404 Not Found error.

https://paper-api.alpaca.markets/v2/options/bars?symbols=AAPL260618C00375000&timeframe=1Day&start=2026-06-10

5

@laxmilli The option historical bar endpoint you are using isn’t correct. The version is v1beta1 and not v2 so the request should look like this:

https://data.alpaca.markets/v1beta1/options/bars?symbols=AAPL260618C00375000&timeframe=1Day&start=2026-06-10

Try that and you should get a response something like this

{
  "bars": {
    "AAPL260618C00375000": [
      {
        "c": 0.04,
        "h": 0.04,
        "l": 0.04,
        "n": 1,
        "o": 0.04,
        "t": "2026-06-11T04:00:00Z",
        "v": 1,
        "vw": 0.04
      }
    ]
  },
  "next_page_token": null
}
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