com.google.keystone.agent
com.google.keystone.agent is a macOS LaunchAgent used by Google Software Update to run update checks and related background tasks for Google apps.
What is com.google.keystone.agent?
com.google.keystone.agent is a macOS LaunchAgent tied to Google Software Update, also known as Google Keystone. It is used to start background update activity for Google software on a Mac, including products such as Google Chrome and other Google applications that rely on the same updater framework. Users usually do not open it directly; it runs through launchd from a plist file in the LaunchAgents folder. Its main role is to help installed Google apps stay current without requiring you to manually check for updates. On managed Macs, the same updater framework can also be controlled through administrator policies for update behavior.
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Safety overview
Status: Mostly safe
This startup item is commonly associated with Google's updater framework and background update behavior is consistent with that purpose. However, LaunchAgents can be imitated by unwanted software, and the exact safety of this item depends on what executable the plist launches. If you inspect the plist, confirm that its Program or ProgramArguments point to a Google updater location such as GoogleSoftwareUpdate or GoogleUpdater inside a Google-owned app support folder, and be more cautious if it launches a shell script, Terminal command, or a non-Google path in your home folder.
Recommendation: Keep this item if you use Google apps and want them to update automatically in the background. If you no longer use Google software, you can disable or remove the related Google updater components, but doing so may stop automatic updates for Chrome and other Google apps until you update them manually or reinstall the app that uses the updater.
File path
～/Library/LaunchAgents/com.google.keystone.agent.plist
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