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Supported Versions

Version Supported Notes
5.x APIs subject to change in alpha releases.
4.x Android 5.0+ (API level 21+) and on Java 8+.
3.x ❌ Ended 2021-12-31 Android 2.3+ (API level 9+) and Java 7+.

Reporting a Vulnerability

Square recognizes the important contributions the security research community can make. We therefore encourage reporting security issues with the code contained in this repository.

If you believe you have discovered a security vulnerability, please follow the guidelines at

Verifying Artifacts

We sign our artifacts using this key:

pub rsa4096/dbd744ace7ade6aa50dd591f66b50994442d2d40 2021-07-09T14:50:19Z

uid Square Clippy <>
sig  sig  66b50994442d2d40 2021-07-09T14:50:19Z 2041-07-04T14:50:19Z ____________________ [selfsig]

The best way to verify artifacts is automatically with Gradle.