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OpenRig

A harness wraps a model. A rig wraps your harnesses. Define your agent team in YAML, boot it with one command. Claude Code and Codex in the same rig, managed as one system.

OpenRig is open-source software for building and running your own network of agents. It turns AI coding agents from a pile of terminal sessions into a persistent, organized team. Talk to a lead agent about the outcome you want; it can coordinate specialists across teams and bring you results and decisions that need your attention. Start with a repository and one useful change, then keep the team's work and context at the same addresses.

It's the open-source system behind my AI civilization experiments.

Guide: Getting started · Stuck? Help · Questions: Q&A · Updates and demos: @_feralmachine on X

See it running

Start here: the guided first-use path: install, talk to the kernel operator, then choose a team for your first useful change.

Not setting this up today? Get the next walkthrough and occasional OpenRig updates → https://openrig.dev/follow

Install and first run

Requires Node.js 22 or 24 and tmux, on macOS or Linux, and one working Claude Code or Codex account: one is enough, since the kernel operator adapts the shipped starter team to whichever you have. On Linux, the distribution's own Node.js can be older (Ubuntu 24.04's is 18); install a supported version with nvm (nvm install 22) or NodeSource. On a Mac with Apple silicon, use Node.js 22 (compatibility history). On a Mac where you aren't an administrator, or where Homebrew belongs to another account (its brew install is refused), install Node.js in your own home folder with nvm: run touch ~/.zshrc (a new Mac account has none, and nvm's installer only adds itself to a profile file that already exists), then the install command on nvm's page, open a new terminal, and run nvm install 22. That needs no administrator password, and npm install -g then installs into your nvm folder. On Windows, use WSL2, the Windows route OpenRig supports; native Windows isn't supported. OpenRig's automated tests don't run on WSL2 yet; see one user's working setup. Launching a rig writes provider hooks and workspace trust settings. Before running the commands below, read what OpenRig changes on your machine and back up the relevant files.

One command. This runs OpenRig's install script from the v0.6.13 release. It checks Node.js and npm, installs the latest published @openrig/cli with npm install -g, runs the Node.js and SQLite check, then runs rig setup --dry-run and rig setup. The first line prints that plan and changes nothing:

curl -fsSL https://raw.githubusercontent.com/mvschwarz/openrig/v0.6.13/scripts/install.sh | sh -s -- --dry-run
curl -fsSL https://raw.githubusercontent.com/mvschwarz/openrig/v0.6.13/scripts/install.sh | sh

If rig setup doesn't finish ready, for example because a provider isn't signed in yet, the script ends with INSTALLED, SETUP NOT COMPLETE: the CLI is installed, and rig setup lists what's left under "Some steps need attention". If the only items left are provider sign-ins, sign in to each selected provider as below and continue; run rig setup again rather than reinstalling the CLI.

Or step by step:

npm install -g @openrig/cli
rig setup --dry-run

To install with Bun instead, run bun add -g @openrig/cli. OpenRig still runs on Node.js, so install Node.js 22 as well. Bun may block this package's postinstall script, in which case the Node.js and SQLite check described under what OpenRig changes on your machine does not run at install time.

npm 11 and later can skip that postinstall script and print npm warn install-scripts naming @openrig/cli. That's expected: the CLI still works, and only the Node.js and SQLite check was skipped. To run it yourself, use node "$(npm root -g)/@openrig/cli/scripts/check-abi.mjs"; rig doctor checks the Node.js version only.

Choose the working account you already have: Claude Code, Codex, or both. Reuse an explicit choice; no second subscription is required. rig setup --dry-run previews the broader setup; applying rig setup checks both harnesses and installs a missing one, plus Herdr unless declined with --no-herdr. Pass the choice with --providers claude or --providers codex so the other reads not selected instead of failed. The one-command install above doesn't know the choice, so it installs and checks both; for one provider, go step by step and run rig setup --providers <choice>. On macOS, the installing agent offers Ghostty once. Setup leaves an existing cmux installation alone. It is optional for the selected-provider path.…