# Firebase Authentication REST API

**Canonical:** https://apis.io/apis/google-firebase/firebase-authentication-rest-api/  
**Provider:** Google Firebase — https://apis.io/providers/google-firebase/  
**Base URL:** https://identitytoolkit.googleapis.com  
**Documentation:** https://firebase.google.com/docs/auth

Firebase Authentication REST API is one of 5 APIs that [Google Firebase](https://apis.io/providers/google-firebase/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Authentication, Identity, and User. The published artifact set on APIs.io includes API documentation.

The Firebase Authentication REST API enables developers to manage user authentication using email/password, phone, and federated identity providers such as Google, Facebook, and Apple. The API supports creating and signing in users, verifying tokens, managing user accounts, sending verification emails, and password resets through the Identity Toolkit endpoints.

## Machine-readable artifacts (2)

- **Documentation** — https://firebase.google.com/docs/reference/rest/auth
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/google-firebase/refs/heads/main/apis.yml

## Other Google Firebase APIs (4)

- [Firebase Hosting REST API](https://apis.io/apis/google-firebase/firebase-hosting-rest-api/)
- [Firebase Remote Config API](https://apis.io/apis/google-firebase/firebase-remote-config-api/)
- [Google Firebase Data API](https://apis.io/apis/google-firebase/google-firebase-data-api/)
- [Google Firebase Messages API](https://apis.io/apis/google-firebase/google-firebase-messages-api/)

## Tags

Authentication, Identity, User

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/google-firebase/firebase-authentication-rest-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/google-firebase/.