Agent Island

Agent Island is an open-source status companion designed for users of Claude Code and Codex on macOS and Windows. The tool monitors the state of these coding environments and provides live session updates, including alerts when it is the user's turn to interact. Its primary function is to keep users informed about the status of their coding sessions without requiring them to manually check, allowing them to focus on other tasks until prompted.

The application operates locally on the user's machine and integrates directly into the system menu bar, with a rotating icon indicating when a session is active. Agent Island reads transcript files generated by Claude Code and Codex, and it communicates with official usage APIs using tokens already available on the user's system. The tool is designed to be unobtrusive, with no dock icon or active windows, and does not require users to create an account or provide any telemetry data. All monitoring and notifications occur locally, ensuring user privacy and minimizing background disruption.

Delivery is native for both macOS and Windows platforms, with installation options including direct downloads and a Homebrew formula for macOS. Agent Island is distributed under the MIT open-source license, and its source code is publicly available on GitHub. There are no mentions of paid features or proprietary restrictions, emphasizing its free and open nature. The tool is aimed at developers or anyone working with Claude Code and Codex who values privacy, local operation, and real-time status notifications.