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Launch HN: Freestyle – Sandboxes for Coding Agents

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Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#51

It doesn't seem very easy to calculate how much it would cost per month to keep a mostly-idle VM running (for example, with a personal web app). The $20/month plan from exe.dev seems more hobbyist-friendly for that. Maybe that's not the intended use, though?

> The $20/month plan from exe.dev seems more hobbyist-friendly for that. Maybe that's not the intended use, though?

And you can go even below that by self-hosting it yourself with a very cheap Hetzner box for $2 or $5.

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#52
post #9
post #8

Earlier quoted context omitted.

And fly.io sprites

Fly.io sprites is the most similar to us of the bunch. They do hardware virtualization as well, have comparable start times and are full Linux. What we call snapshots they call checkpoints. The big pros of Sprites over us is their advanced networking stack and the Fly.io ecosystem. The big cons are that Sprites are incredibly bare bones — they don't have any templating utilities. I've also heard that Sprites sometime…

sprites have weird lately, i think fly.io is having trouble with capacity in various locations.

is the experience similar? can i just get console to one machine, work for a bit, logout. come back later, continue?

how does i cost work if i log into a machine and do nothing on it? just hold the connection.

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#53

dumb question. none of these protect your from prompt injection. yes?

no, but the goal of these is if you are faced with prompt injection the worst case scenario is the AI uses that computer badly.

unless i am misundestanding. not sure how this computer prevents secrets from my gmail leaking. thats the worst case.

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#54
post #9

Earlier quoted context omitted.

Fly.io sprites is the most similar to us of the bunch. They do hardware virtualization as well, have comparable start times and are full Linux. What we call snapshots they call checkpoints. The big pros of Sprites over us is their advanced networking stack and the Fly.io ecosystem. The big cons are that Sprites are incredibly bare bones — they don't have any templating utilities. I've also heard that Sprites sometime…

sprites have weird lately, i think fly.io is having trouble with capacity in various locations. is the experience similar? can i just get console to one machine, work for a bit, logout. come back later, continue? how does i cost work if i log into a machine and do nothing on it? just hold the connection.

This will just work on us.

We do auto suspend depending on your configured timeout. We'll pause your VM and when you come back the processes will be in the exact same state as when you left.

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#55
post #51

It doesn't seem very easy to calculate how much it would cost per month to keep a mostly-idle VM running (for example, with a personal web app). The $20/month plan from exe.dev seems more hobbyist-friendly for that. Maybe that's not the intended use, though?

> The $20/month plan from exe.dev seems more hobbyist-friendly for that. Maybe that's not the intended use, though? And you can go even below that by self-hosting it yourself with a very cheap Hetzner box for $2 or $5.

Can you start up multiple VM's easily on a Hetzner box?

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#57

Interesting! We're working on a similar solution at UnixShells.com [1]. We built a VMM that forks, and boots, in [1] https://unixshells.com [2] https://github.com/unixshells

Can your service scale ram? like the way docker desktop does. Manual is fine.

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#58
post #57

Interesting! We're working on a similar solution at UnixShells.com [1]. We built a VMM that forks, and boots, in [1] https://unixshells.com [2] https://github.com/unixshells

Can your service scale ram? like the way docker desktop does. Manual is fine.

yep you can choose ram + disk + cpu size

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#59

Earlier quoted context omitted.

no, but the goal of these is if you are faced with prompt injection the worst case scenario is the AI uses that computer badly.

unless i am misundestanding. not sure how this computer prevents secrets from my gmail leaking. thats the worst case.

If you put your gmail credentials into a VM that an AI Agent dealing with untrusted prompts has access to they should be treated as leaked and be disabled immediately.

However, if you don't put your administrative credentials inside of the VM and treat it as an unsafe environment you can safely give it minimal permissions to access specific things that it needs and using that access it can perform complex tasks.

Re: Launch HN: Freestyle – Sandboxes for Coding Agents

#60
It's hard to tell what this is or how it compares to other things that are out there, but what I latched onto is this:

> Freestyle is the only sandbox provider with built-in multi-tenant git hosting — create thousands of repos via API and pair them directly with sandboxes for seamless code management. On top of that, Freestyle VMs are full Linux virtual machines with nested virtualization, systemd, and a complete networking stack, not containers.

It makes me think of the git automation around rigs in Gas Town: https://steve-yegge.medium.com/welcome-to-gas-town-4f25ee16d...

Edit: I realize the Loom is a way to look at it. Loom interrupted me twice and I almost skipped it. However it gave me a better idea of what it does, it "invents" snapshotting and restoring of VMs in a way that appears faster. That actually makes sense and I know it isn't that hard to do with how VMs work and that it greatly benefits from having only part of the VM writable and having little memory used (maybe it has read-only memory too?).

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