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Documentation Index

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Agentastic is a native macOS code editor built specifically for AI agentic coding workflows. Written in Swift and SwiftUI, it gives you a lightweight environment where multiple AI coding agents can work simultaneously — each in its own isolated branch — without interfering with your work or each other.

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The problem with traditional IDEs

Traditional IDEs weren’t designed with AI agents in mind. When you try to run multiple AI coding assistants in a standard editor, you quickly run into problems:
  • Conflicts — Multiple agents editing the same files leads to chaos
  • Blocked workflow — You can’t work while an agent is making changes
  • No isolation — One agent’s mistakes affect everything in your project
  • Missing context — Agents don’t understand your project’s branch structure

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How Agentastic solves it

Agentastic uses agent isolation through git worktrees. Every AI agent gets its own complete checkout of your repository on a separate branch. This means:
  • One branch per agent — Each agent works in its own git worktree, a full copy of your repo
  • Zero conflicts — Agents can’t overwrite each other’s work because they’re on separate branches
  • Keep coding — You stay productive in your main workspace while agents run in the background
  • Easy review — Inspect exactly what each agent changed using the built-in diff viewer

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Architecture

Each agent branch lives alongside your main branch as an independent worktree. When an agent finishes, you review the diff and merge if you’re satisfied. 
Your Repository
    |
    |-- main branch (your workspace)
    |
    |-- feature-auth (Claude agent)
    |
    |-- feature-api (Codex agent)
    |
    |-- bugfix-login (Another Claude agent)

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Key features

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Agent management

  • Git worktrees — Automatic worktree creation for each agent
  • Docker containers — Optional container isolation for maximum security
  • Agent Home — Launch multiple agents with a single prompt
  • Parallel execution — Run Claude, Codex, and other agents simultaneously

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Development environment

  • Native macOS — Built for macOS 14+ with Apple Silicon optimization
  • Ghostty terminal — GPU-accelerated terminal with smooth rendering
  • 100+ languages — Syntax highlighting and LSP support
  • Fast performance — Lightweight app with quick startup

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AI integrations

  • Claude Code — First-class support for Anthropic’s Claude
  • Codex — OpenAI Codex integration
  • Command Code — Langbase Command Code integration
  • Custom agents — Add any TUI-based AI agent
  • Code review — AI-powered code review before merging

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Who Agentastic is for

Agentastic is built for developers who want to move faster with AI. It’s a great fit if you:
  • Use AI coding assistants and want to run multiple agents in parallel
  • Need safe, isolated environments for experimenting with AI workflows
  • Are frustrated with single-threaded AI coding and want to increase your throughput

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Next steps

Install Agentastic

Get Agentastic running on your Mac in minutes with Homebrew or a manual DMG install.

Launch your first agent

Follow a step-by-step walkthrough to launch your first AI coding agent.

Explore Agent Home

Learn how Agent Home works as your control center for managing agents.