Agent Island is a free, open-source desktop companion for developers who run Claude Code and Codex. It solves a simple workflow problem: coding agents often continue working in terminals or background sessions while the developer moves to another task, and it is easy to miss the moment when an agent needs input or finishes. Agent Island watches the local session artifacts already present on the machine and turns them into clear status signals without sending prompts, repository contents, or session data to a hosted dashboard.
The app distinguishes practical states such as working, waiting for input, finished, and stale. It surfaces those states from the menu bar and can notify the user when attention is required. This lets a developer supervise multiple coding sessions without repeatedly opening every terminal window. The goal is not to replace Claude Code or Codex, orchestrate agents, or modify their output. It is a lightweight status layer that helps a person return at the right moment.
Agent Island is useful for individual developers, independent makers, and small engineering teams that use local coding agents during normal software work. A developer can start a long-running refactor, test run, or analysis task, switch to documentation or review work, and rely on the companion to show whether the session is still active or has reached a state that needs human attention. Because the monitoring is local-first, teams can inspect the source and understand the data boundary rather than trusting an opaque cloud dashboard.
The project supports macOS and Windows. Its interface is designed to stay out of the way: the main signal lives in the system menu area, with session details available when needed. The project is MIT licensed, and the source code, releases, and issue history are public on GitHub. The website provides installation guidance, privacy details, and technical articles explaining how session-state inference works.
Key features include local monitoring for Claude Code and Codex, clear working and waiting signals, your-turn notifications, stale-session detection, multi-session visibility, native desktop builds, and an open-source implementation. Agent Island is free to use. There is no required subscription, paid launch, or hosted account for the core app.
The product is intentionally focused. It does not claim to be an AI model, code editor, project-management suite, or remote agent platform. Instead, it addresses the small but recurring coordination gap between a developer and the coding agents already running on the developer's computer. For people who regularly switch among several coding tasks, that focused status signal can reduce unnecessary checking and make agent-assisted development easier to supervise.
