Troubleshooting Mixpanel Export API Authentication Error 400

·Nov 04, 2025 04:02 AM·

Hi everyone, Is the Mixpanel export API not working? I'm using my service account username and secret, and data-eu as data is stored in EU, but I'm constantly getting "Unable to authenticate request" error with code 400. I've attached screenshot as well. Can someone help me understand the reason for this? Service account is owner so it should have access to everything.

1 comment

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Baffour A.
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took me a few tries as i was using the project secret at first and that wasn't working, but I did get it to work eventually. Did you choose the right option in this dropdown? They're both labelled Basic so it's hard to tell which one is selected...

Baffour A.
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took me a few tries as i was using the project secret at first and that wasn't working, but I did get it to work eventually. Did you choose the right option in this dropdown? They're both labelled Basic so it's hard to tell which one is selected...