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Agentastic is a native macOS code editor built for AI-first development. Instead of running one AI agent at a time and waiting, you launch multiple agents in parallel — each working in its own isolated git worktree or Docker container — so you can review finished work while more keeps coming in.

Installation

Download and install Agentastic on your Mac via Homebrew or direct download.

Your First Agent

Launch your first AI coding agent in minutes with a step-by-step walkthrough.

Agent Home

Your command center for launching, configuring, and monitoring AI agents.

Supported Agents

Browse 33+ built-in integrations including Claude, Codex, Gemini, and Cursor.

Multi-Agent Workflows

Learn strategies for running multiple agents in parallel on the same project.

Browser Automation

Let agents control the built-in browser to test and verify UI changes automatically.

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How Agentastic works

Each AI agent you launch gets its own git worktree — a complete, independent checkout of your repository on a separate branch. Agents edit files, run commands, and make changes in complete isolation. When an agent finishes, you review its diff, run AI code review, and merge or discard — all without interrupting your own work.
1

Install Agentastic

Install via Homebrew: brew install agentasticai/tap/dev, or download the .dmg from agentastic.dev/download.
2

Open your project

Press Cmd+O to open any git repository. Agentastic works with any project that has git initialized.
3

Launch an agent

Open Agent Home, write a prompt describing your task, select an AI agent, and click Send. Agentastic creates a worktree and starts the agent automatically.
4

Review and merge

When the agent finishes, open the Diff Viewer to review changes. Run AI code review for a second opinion, then merge or discard.
Agentastic requires macOS 14.0 (Sonoma) or later. Both Apple Silicon and Intel Macs are supported.