Is Firebase Auth JWT?

Firebase gives you complete control over authentication by allowing you to authenticate users or devices using secure JSON Web Tokens (JWTs) . You generate these tokens on your server, pass them back to a client device, and then use them to authenticate via the signInWithCustomToken() method.

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Is Firebase authentication free?

All other Firebase Auth features are no-cost on all plans . Prices are per successful verification. On the Blaze plan, Phone Authentication provides a no-cost tier. The first 10K verifications for both instances (USA, Canada, and India and All other countries) are provided at no cost each month.

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