I don't know if I want to create an ad-hoc list of permissions. What I would like would be something like take a snapshot of my current workspace in a VM. Run claude there and let it go wild. After the end of the session, kill the box. The only downside is potentially syncing the claude sessions/projects. But I don't think that'd be too difficult.

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secure 3 hours ago | parent | next [-]

I recently blogged about how I do this using MicroVMs on NixOS: https://michael.stapelberg.ch/posts/2026-02-01-coding-agent-...

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senko 3 hours ago | parent | prev | next [-]

> take a snapshot of my current workspace in a VM. Run claude there

Sounds like docker + overlayfs might fit the bill, as long as there's a base image that is close enough to what you need.

I don't think there should be One True Way how to run these, everyone can set it up in a way that best fits their workflow.

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ushakov 3 hours ago | parent [-]

both Docker and bubblewrap are not secure sandboxes. the only way to have actually isolated sandboxes is by using VMs

disclaimer: i work on secure sandboxes at E2B

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gf000 an hour ago | parent | next [-]

What about cgroups? I know they are not exactly analogous, but to me that seems like a pretty decent solution.

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senko 3 hours ago | parent | prev | next [-]

No disagreement from me. From the article:

> Bubblewrap and Docker are not hardened security isolation mechanisms, but that's okay with me.

Edit to add: my understanding is the major flaw in this approach is potential bugs in Linux kernel that would allow sandbox escape. Would appreciate your insight if there are some easier/more probable attack vectors.

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its-summertime 2 hours ago | parent | prev [-]

Do you have more information on how to set up such VMs?

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ushakov 2 hours ago | parent [-]

for personal use, many ways: Vargant, Docker Sandbox, NixOS VMs, Lima, OrbStack.

if you want multi-tenant: E2B (open-source, self-hosted)

	▲	eikenberry 8 minutes ago \| parent [-]
		Hashicorp has mostly abandoned Vagrant, so I'd avoid it.

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fsflover 22 minutes ago | parent | prev [-]

> What I would like would be something like take a snapshot of my current workspace in a VM.

Sounds like you may be interested in Qubes OS, which runs everything in VMs.