What are the fees for using the Firebase Auth REST API as an alternative to the Firebase Authentication SDK?

[user20097846]

We are aware that there is a fee for using Firebase Authentication if you exceed the free limit for the Blaze plan as described in the following URL.

https://firebase.google.com/docs/auth#pay_as_you_go_blaze

Are there any other fees for using Firebase Auth REST API other than the fee for exceeding the free allowance in the Blaze plan?

If I use the Firebase Auth REST API, will I have to pay for read, write, delete, etc. as described in the following URL since I will be using the Cloud Firestore?

 https://firebase.google.com/docs/firestore/pricing#select-region

[Alan Escobar Martinez]

Hello there,

The limits described here are the ones that you need to consider for every project, even if you are using Blaze plan (unless it is indicated otherwise). We are now recommending to use Firebase with GCIP (Identity Platform) that includes additional benefits (like multi-factor auth, the ability to use blocking functions and the chance to review logs in a more detailed way), but this comes with additional costs based on your current users (don't worry, there is also a no cost limit for new users).

All of these costs are described in here and in the page that you shared in your previous email. 

Just to clarify, Firebase Auth is a different service that is not connected directly with Cloud Firestore, so the read and write operations of this last one are not billed (unless you use Firestore by your own).

I hope this helps

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Alan Escobar Martínez Technical Solutions Engineer Service provided by EPAM Systems, on behalf of Google