How to avoid 403 Error with Implicit Grant Flow Auth

1ucaLuca — Thu, 09 Jan 2025 20:50:13 GMT

Hello everybody,

I am currently developing a static webapp with html, js and css. I am using Implicit Grant Flow as authorization and everything worked fine. However, when my friend tried to test the app, nothing worked.
I quickly found out that it was a 403 error that occurred during the API call.

Thanks to a post ( https://community.spotify.com/t5/Spotify-for-Developers/Getting-403-Error-For-Specific-Spotify-Account-with-API-Request/td-p/6468715 ), I now know that I can add all users manually so that they can use my application

However, I would like to know if I can also do this publicly without adding them manually.

Thanks for your help.

EDIT:

I just read a bit further. You can apply for 'extended quota mode' to remove this restriction.

Has anyone had any experience with this? My project is for my course.
How long does it take to be activated?

Would you recommend it?

Re: How to avoid 403 Error with Implicit Grant Flow Auth

Ximzend — Fri, 10 Jan 2025 11:20:11 GMT

Hi @1ucaLuca

Thank you for reaching out to the Community, and welcome!

It’s great to hear you’ve figured out how to let other users access your app.

Since your app is part of a school project, it’s important to note that quota extensions aren’t available for such cases. When submitting a request and selecting "Yes" to the question "Is your app for personal use only?", you can read the following: "Please note that we will not grant a quota extension for home automation, school, or hobby projects."

Additionally, the review process for apps can take several months, with the possibility of rejection.

I hope this answers your question. If you have any more questions, feel free to ask.

Cheers!

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How to avoid 403 Error with Implicit Grant Flow Auth

Re: How to avoid 403 Error with Implicit Grant Flow Auth