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Installation

Pentagon is a native macOS application. Download it, install it, and you’re ready to start building your team.

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Requirements

  • macOS 15 (Sequoia) or later
  • Claude Code CLI installed and authenticated
  • An active Anthropic account
1

Install Claude Code

Pentagon uses Claude Code as the engine powering each agent. If you don’t have it yet:
curl -fsSL https://claude.ai/install.sh | bash
Then authenticate:
claude
Follow the prompts to sign in with your Anthropic account. You need a working claude command before Pentagon can spawn agents.
2

Download Pentagon

Download the latest version from pentagon.run/download.Open the .dmg file and drag Pentagon to your Applications folder.
3

Launch and sign in

Open Pentagon from your Applications folder. You’ll be prompted to sign in with your Anthropic account.Pentagon checks for Claude Code automatically on launch. If it’s not detected, you’ll see setup instructions before proceeding. You can also configure the CLI path manually in Settings > Claude CLI.First-time users see a short animated walkthrough introducing Pentagon’s core concepts. Click through or skip — then you’ll land on the home screen where you can create your first map.

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Verify your setup

The quickest way to confirm everything works:
  1. Create a new map
  2. Add a project folder
  3. Spawn an agent
  4. Send it a message
If the agent responds, you’re good. If not, check Settings > Claude CLI to verify Pentagon found your Claude installation. You can also run claude --version in your terminal to confirm Claude Code is installed and authenticated.

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Updates

Pentagon checks for updates automatically and prompts you when a new version is available. Updates install in-place — your maps, agents, and conversations are preserved.

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Data storage

Pentagon is cloud-native — your agent conversations, documents, and workspace metadata are stored in the cloud so they’re accessible and synced automatically.
  • Agent conversations and documents are stored in the cloud
  • Source code and project files stay on your local machine
  • Settings and preferences are stored in macOS UserDefaults
Your source code never leaves your machine. Only agent conversations and workspace data are stored in the cloud.

Next: Quick Start

Create your first agent team in 5 minutes.