trailofbits/coop

Isolated VM environment for running Claude Code and Codex

AI agentsRust#claude-code#cli#codex#firecracker#kvm

1.4 Steady Magnitude out of 10. Star growth looks organic. Data as of September 14, 2026.

About the project

Rust CLI that runs Claude Code and Codex inside disposable isolated microVMs (Firecracker/KVM on Linux, Lima on macOS) with full tool access and no risk to the host machine.

Useful for

Run Claude Code in an isolated VM so it can install packages and edit files without touching the host
Spin up a separate VM per project with coop up and coop claude to run agents in parallel
Recreate a clean VM after risky agent experiments instead of manually cleaning up the system

README summarized by DeepSeek V4.1 Flash. Details may be inaccurate.

Why it’s trending

1 star today.
The spike has held for 2 days in a row — not a one-off blip.
Hacker News: “Coop – Isolated VM Environments for Running Claude Code and Codex” — 71 points, 6 days ago.
Recent forks include notable developers: @leechristensen (767 followers).

Stars per day

Bars are daily stars, the line is the usual pace. Red marks spike days.

Numbers

Total stars: 230
Stars in a day: 1
Forks: 13
Issues and pull requests: 473
Watchers: 2
Language: Rust
License: Apache-2.0
Latest release: v0.6.0 · September 9, 2026
Created: April 2, 2026
Last push: September 11, 2026

Star trust

Growth looks organic: forks and discussion are in line with active projects, and stars arrive unevenly, the way people give them.

These are heuristics, not a verdict: we judge by the repository’s behavior, not by a list of stargazers.

Hacker News discussions

Coop – Isolated VM Environments for Running Claude Code and Codex71 points, September 7, 2026

Spotted in

September 13, 2026Spotted on Hacker News

README badge

Paste it into your README — the badge shows the current magnitude and links to this page.

[![Seismograph](https://gitnova.dev/badge/trailofbits/coop.svg?lang=en)](https://gitnova.dev/en/r/trailofbits/coop)

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