In May 2016, we released the newest version of Google Identity Toolkit as Firebase Authentication, and in April 2019, we released Google Cloud's Identity Platform. These products include upgraded client SDKs, open source UI libraries, session management and integrated email sending service for forgotten password flows.
On June 30, 2020, the SDKs documented on this page and the API setting page will stop functioning. (The https://identitytoolkit.googleapis.com/... and https://securetoken.googleapis.com/... endpoints, used by Identity Platform and Firebase Authentication, will continue to function.)
To migrate an existing project from Identity Toolkit, see the Identity Platform migration guide or Firebase Authentication migration guide.
Release Notes
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Release notes and minor bug fixes will be posted here.
Version 2
Version 2 includes the following differences:
Version 1
The initial version of the API. There are no special notes.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-06-27 UTC.
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