API KEY

Rosario Caruso

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Jan 13, 2026, 8:59:05 AM (3 days ago) Jan 13

to Machine Learning for Kids

Hi, I created a text-based template that I want to use with App Inventor. When testing the app on my device, the following message appears:

" The Machine Learning for kidswebsite did not recognize your project API key. The most likely reason is that your ML project has been deleted." However, I created the ML4K project just 4 hours ago. I also loaded the extension provided by ML4K into App Inventor. What should I do? Regards

Ross Regards Regards Regards Regards

Dale Lane

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Jan 13, 2026, 9:08:25 AM (3 days ago) Jan 13

to Machine Learning for Kids

Are you 100% sure that the project hasn't been deleted?

For example, how did you log in to the Machine Learning for Kids site?

If you used the "Try it now" button (and did not log in with a username and password) then this is a temporary session where projects are automatically deleted after four hours, so that would be consistent with what you describe.

Rosario Caruso

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Jan 14, 2026, 4:35:00 AM (2 days ago) Jan 14

to Machine Learning for Kids

The problem is solved. I had to cancel a project I'd like to use between February and March. I'd like to know if I can, at least for the duration of this activity, increase the project limit to 3. Best regards

Ross

Dale Lane

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Jan 14, 2026, 4:37:27 AM (2 days ago) Jan 14

to Machine Learning for Kids

I would rather not - please see https://groups.google.com/g/mlforkids/c/HTwsKO6PQRs/m/26n33xYPDwAJ where I've described the motivation for this, and highlighted that if you store projects on your own computer you would not be impacted by this limit.