The Sync Contacts on macOS plugin enables users to synchronize their Mac's Contacts app with an Obsidian vault. It allows users to create individual files for each contact with customizable details. By using a specified Smart List in the Contacts app, users can filter which contacts are synced, ensuring precise control over the integration. A single command performs the sync operation, and the plugin notifies users of the sync status and results. It utilizes AppleScript to access the Contacts app, requiring users to grant Obsidian permission for functionality. This plugin simplifies managing contact information within Obsidian, offering seamless integration with macOS.