# microsandbox

13 Hacker News commenters recommended microsandbox and 2 criticized it, November 2025 to November 2026. It was recommended in 6 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** Open-source microVM sandbox for AI agents, praised for fast startup and fine-grained network policies. Caveats: early-stage and no GPU support.

## Why people recommend it

- Preferred over other open-source sandboxes (3 comments): "we think https://github.com/superradcompany/microsandbox/ is the closest OSS to it and we have a great DX and improving" ([source](https://news.ycombinator.com/item?id=49251577)) "I can recommend microsandbox. More mature than smolmachines." ([source](https://news.ycombinator.com/item?id=48445143)) "smolvm or microsandbox are great options" ([source](https://news.ycombinator.com/item?id=49346137))
- Fast startup and light resource use (2 comments): "Microsandbox microVMs start super fast though, and so far I have not had an issue with resource consumption." ([source](https://news.ycombinator.com/item?id=49169893)) "much lighter, and more elastic" ([source](https://news.ycombinator.com/item?id=50209673))
- Fine-grained network policies and security tools (2 comments): "microsandbox is designed to work with most security products" ([source](https://news.ycombinator.com/item?id=49258695)) "Fine grained network policies is supported by microsandbox" ([source](https://news.ycombinator.com/item?id=50020641))
- Solid foundation and SDK direction (2 comments): "They're working on an SDK-first experience so you can build whatever applications you want on top" ([source](https://news.ycombinator.com/item?id=48232399)) "it looks to have a solid foundation" ([source](https://news.ycombinator.com/item?id=48694457))

## What people warn about

- Early-stage and still maturing (1 comments): "been watching microsandbox but its pretty early" ([source](https://news.ycombinator.com/item?id=47305763))
- Lacks GPU support (1 comments): "One thing it's lacking is GPU support." ([source](https://news.ycombinator.com/item?id=48455272))

## Alternatives hackers recommend

- [Docker Sandboxes](https://hackerapproved.com/p/docker-sandboxes.md): 50 recommend
- [NVIDIA OpenShell](https://hackerapproved.com/p/openshell.md): 36 recommend
- [Claude Code sandbox](https://hackerapproved.com/p/claude-code-sandbox.md): 16 recommend
- [MXC (Microsoft Execution Containers)](https://hackerapproved.com/p/mxc.md): 15 recommend
- [Era](https://hackerapproved.com/p/era.md): 13 recommend

## Cite as

Hacker Approved, "microsandbox", https://hackerapproved.com/p/microsandbox/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).