Hacker News: appcypher

Microsandbox – local-first programmable micro VMs

appcypher — Sat, 06 Jun 2026 12:39:12 +0000

Article URL: https://github.com/superradcompany/microsandbox

Comments URL: https://news.ycombinator.com/item?id=48424487

Points: 3

# Comments: 0

New comment by appcypher in "We made our filesystem 47× faster by deleting it"

appcypher — Sat, 23 May 2026 21:51:17 +0000

that's the tldr. we used fuse and we learnt we shouldn't for a sandbox filesystem

New comment by appcypher in "We made our filesystem 47× faster by deleting it"

appcypher — Sat, 23 May 2026 21:06:10 +0000

interested. is the split for dedup, parallel pulls, or lazy loading specific files? maybe all.

we've played with some chunking ideas on our end but haven't landed on a format. drop a link when it's out.

New comment by appcypher in "We made our filesystem 47× faster by deleting it"

appcypher — Sat, 23 May 2026 20:58:40 +0000

fair point. that's the title we used on our X article and i copy-pasted. updated the article's actual title.

We made our filesystem 47× faster by deleting it

appcypher — Tue, 19 May 2026 18:01:23 +0000

Article URL: https://microsandbox.dev/blog/oci-filesystem-47x-faster

Comments URL: https://news.ycombinator.com/item?id=48196831

Points: 63

# Comments: 38

Building Context-Efficient AI agents with Bash and a CLI

appcypher — Fri, 13 Feb 2026 16:34:01 +0000

Article URL: https://tool.store/blog/building-context-efficient-agents#references

Comments URL: https://news.ycombinator.com/item?id=47004588

Points: 4

# Comments: 0

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 21:53:54 +0000

What do you mean?

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 15:18:00 +0000

Not sure what that entails. You can try and I can help along the way

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 10:09:57 +0000

Wow. Just seeing this. I've not done proper benchmarking yet but rn we are lagging behind in file I/O for the OverlayFS impl

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 10:08:47 +0000

They are similar. We use libkrun under the hood. Firecracker team seems not to be interested in a macOS implementation

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 09:05:50 +0000

Katacontainers is an interesting project. Microsandbox is a more opinionated project with a UX that focuses on getting up and running with microVMs quickly. I want this experience for Linux, macOS and Windows users.

More importantly is making sandboxing really accessible to AI devs with `msb server`.

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 08:50:31 +0000

No they are not.

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 08:49:43 +0000

If by embeddable, you mean having the vm run in the same process, then no. The vm aborts its process when it's done so it has to run as separate process.

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Sat, 31 May 2025 08:43:54 +0000

Will fix the docs

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Fri, 30 May 2025 22:22:02 +0000

We support just Docker hub for now. Let me know if you want any other OCI-compatible registry.

PS: microsandbox will likely have its own OCI registry in the future

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Fri, 30 May 2025 21:48:16 +0000

They are Linux VMs and you can host any executable that can work on that. The python/node environment you see is part of what makes the SDK work. Really, it's very similar to Docker in use.

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Fri, 30 May 2025 21:36:10 +0000

Your statement initially went over my head. Sorry lol. You can always download the installer script and audit yourself. I will set up proper distribution later.

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Fri, 30 May 2025 21:29:51 +0000

Right. You can skip the `with` context manager and call start and stop yourself.

There is an example of that here:

https://github.com/microsandbox/microsandbox/blob/0c13fc27ab...

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Fri, 30 May 2025 19:33:37 +0000

It will be maintained as I will be using it for some other product. And it will be audited in the future but it still early days.

New comment by appcypher in "Microsandbox: Virtual Machines that feel and perform like containers"

appcypher — Fri, 30 May 2025 19:32:28 +0000

> can you share some thoughts on how you compare or future direction?

Microsandbox does not offer a cloud solution. It is self-hosted, designed to do what E2B does, to make it easier working with microVM-based sandboxes on your local machine whether that is Linux, macOS or Windows (planned) and to seamlessly transition to prod.

> Do you also use Firecracker under the hood?

It uses libkrun.