Coop – Isolated VM Environments for Running Claude Code and Codex

coop Isolated VM environments for running Claude Code and Codex. Pronunciation: "coop" (/kuːp/) — one syllable, rhymes with "loop", like the thing you keep chickens in. Not "co-op". Pronunciation: "coop" (/kuːp/) — one syllable, rhymes with "loop", like the thing you keep chickens in. Not "co-op". coop is a Rust CLI that manages disposable virtual machines where Claude Code and Codex have full tool access: Docker, git, compilers, package managers, all without risk to your host machine. Each VM is isolated, reproducible, and cheap to create and destroy. Setup Install the latest release: curl -fsSL https://raw.githubusercontent.com/trailofbits/coop/main/install.sh | bash Or build from source (requires Rust): cargo build --release cp target/release/coop /usr/local/bin/ Then build the VM template image: coop setup On Linux, coop setup also installs Firecracker and fetches a guest kernel. On macOS, install Lima first (brew install lima) — setup fails without it. coop is tested on macOS arm64 (Apple Silicon) and Linux x86_64; Linux arm64 builds are available but untested. Each backend has its own host requirements — see Prerequisites. Keep coop updated: coop update See coop update and the updates config section. Usage Start an instance for the current project and launch an agent CLI: cd ~/code/my-project coop up coop claude # or coop codex Documentation Documentation index Getting started Command reference Configuration reference Images and profiles Workspace sync Claude Code integration Codex integration Editor integration Multi-instance Platform backends Shell completion Architecture and trust model Contributing and security policy