Chatml

ChatML

  Run AI coding agents in parallel. Each task gets its own worktree.

ChatML is a native macOS app for AI-assisted development. Instead of chatting with an AI and copy-pasting code, you describe a task and Claude does the work — reading files, writing code, running commands, and creating PRs — all inside an isolated git worktree so nothing touches your working directory.

Spin up five sessions at once: one refactoring auth, one adding an API endpoint, one fixing a bug, one writing tests, one reviewing a PR. They all run in parallel without stepping on each other.

How It Works

Sessions are fully isolated. Each one gets its own branch, its own working directory, and its own AI agent. No merge conflicts between parallel tasks.

Download

Download the latest release (.dmg for macOS)

Or build from source:

You'll need an Anthropic API key — the onboarding wizard will walk you through setup.

Key Features

Worktree-Isolated Sessions

Every session creates a git worktree with its own branch and working directory. Sessions are fully isolated — no merge conflicts between parallel tasks, no accidentally committing to the wrong branch.

Full Agent Autonomy

Powered by the Claude Agent SDK. Claude has full tool access within each session: reading and writing files, running terminal commands, searching the codebase, and executing multi-step workflows. Watch everything happen in real time — text streams as it's generated, tool calls show their status and duration, sub-agents are tracked independently.

Built-In Code Review

Start a review conversation and Claude examines the session's changes with inline comments, severity levels, and resolution tracking.

Pull Requests & CI/CD

Push a branch and create a GitHub PR without leaving the app. Claude generates PR descriptions…