nala

Harmony is a free desktop workspace for coding-agent CLIs. It puts real provider terminals, shared tasks, durable messages, and human approvals in one local app. The core path does not require a Harmony cloud host or website account.

Harmony works with Claude Code, Codex, Cursor, Grok, Kimi, Gemini, Devin, OpenCode, and your own CLI. Each tool keeps its native terminal behavior while sharing the surrounding workspace.

Three ways, all of which you can see. They share one task list, and an agent claims a task before starting it, so two never do the same work. They message each other through an inbox that keeps every message through a restart (messaging is in preview; the task list is not). And by default, starting another agent or doing anything risky waits for your OK. Turning on YOLO mode lets them go ahead without asking.

Yes. The task list and the inbox belong to Harmony, not to any one company, so Claude Code, Codex, Cursor, Grok, Kimi, Gemini, Devin, and OpenCode can all pass work to each other. Each tool still runs as its own program, with its own login and its own subscription. Harmony coordinates them; it does not replace them.

Both. Agents reach the workspace as an MCP server, which is how they read terminals, type into them and drive a browser. You reach the same operations from a terminal with no window open, which is what makes supervision scriptable and lets a second window watch the first.

Provider credentials stay with the CLI you chose, on the machine where that CLI runs. Harmony Core does not require a Harmony account or a Harmony model gateway. Harmony does not put those credentials in support bundles. Sending work to Cloud copies files you selected; known sensitive paths are refused at handoff. Review the file list.

Harmony publishes Windows, macOS, and Linux builds today: Windows and Linux 3.25.8 (stable); macOS 3.25.2-preview.1 (preview). The download page lists only builds that exist, so it never offers a link that cannot complete. Windows and macOS builds are unsigned, so the operating system interrupts the first open; the download page shows how to get past that. Every artifact publishes a SHA-256 so you can check the bytes you downloaded. That is file integrity, not code signing.

The workspace, terminal history, and on-device features are local-first. Third-party coding agents and model providers may still need a network connection under their own terms.

Closing the window hides Harmony to the tray. Quit UI closes the interface while local sessions continue in the background; Exit Harmony stops them. Laptop sleep pauses every local process with the operating system. On wake, Harmony renews authority, rechecks the processes, and reattaches the same tabs and terminal history.

Yes. The desktop workspace and terminal agent are free, need no account, and stay that way. Harmony Pro is a separate, optional subscription for cloud hosting. See the pricing page for the plan, the free trial, and what happens when hours run out. Your third-party provider subscriptions remain between you and that provider.