Launch HN: Agent37 (YC F26) – Low-cost agent sandboxes for running agents

Launch HN: Agent37 (YC F26) – Low-cost agent sandboxes for running agents

21 pointsby vishnukool14 comments

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  • congrats on the launch.

    i think the sandbox part is getting commoditized, like others said. the harder part is what the agent can touch inside it.

    you connect google, the agent gets access to everything. sandbox protects the host. it does not protect your tokens.

    scoped, short lived credentials per task. that i would pay more for. is it on your roadmap?

  • Congrats on the launch!. Looks awesome. One small gripe I have is that the user success stores seems obviously like claude has written them. I cancelled my claude sub for codex, partly because i cannot understand claude's style at all - not that there is anything is wrong with it, its effing incomprehensible.

    Compare the two yourself and judge(latter is written in gpt-6 luna).

    > One client is one API call. It comes back as an always-on Hermes agent that holds that client’s data, that client’s identity, and a hard ceiling on what it can spend. It answers on an OpenAI-compatible endpoint from the moment it boots, so integrating it was a base URL, the same as pointing at any model API.

    > Boon provisions an agent for a client with one API call. Each agent has its own client data and identity, along with a spending limit. It exposes an OpenAI-compatible endpoint, so Boon can connect to it by configuring a base URL.

  • Congrats on the launch! Can you speak on how you are able to keep the cost really low?
  • I used agent37 for a protoype a few weeks ago and it was amazing, awesome work. cold start time was ever so slightly annoying but nevertheless, cost is attractive
  • gVisor is... less secure than VMs; but the front page price-compares against VMs, so not apples-to-apples
  • Sandboxes look a bit commoditized. You cannot 10x on basically what's just a VM with a few agent-friendly features in 2026. Hence competing on purely price as a new startup is a bad idea imo. As you mentioned hyperscalers have insane margins, but if this turns out to be a real market, they will lower cost, even just eat the loss if they want and take you out of business. Without any hardware innovation, it's tough for me to see this working. If you are going with a customization angle, again, no moat and plenty of competitors
  • I've been looking at offloading local work from my MacBook Pro (M1 Pro / 32 GB) specifically because I've been working with a lot of Android apps and emulation is killing me on top of everything else that I'm running.

    Got a bunch of Daytona credits which are close to useless given their restrictions until you hit tier 3.

    You seem like you're actually slightly cheaper than https://boat.dev/ but with less storage? That's the closest to your pricing unless I'm mistaken. Any other insight as to differences between you two?

    Also I'll add you to a list I've been maintaining of sandbox providers, congrats on the launch!

    https://engine.build/lab/agent-sandboxes

  • Congrats on the launch! Very exciting!

    You guys are operating in a very competitive space. This stuff is fun to build, so a lot of engineers will end up building it. Not to discourage you, but I suspect it will be difficult to capture much value selling this offering as its going to be race to the bottom against very well funded alternatives that can sell these features at a loss in order to get you to use their databases and other offerings that are higher margin and stickier.

    As you guys learn more about how to take this sort of technology to market, you may consider trying to get closer to the actual work that people actually need these agents to do. What can you do better because you have this technology? For example, I work in healthcare administration and we have built our own agent sandbox infrastructure on top of firecracker microvms that solve similar use cases as Agent37. We will never sell it. It's part of our competitive advantage for doing healthcare tasks.

    Food for thought! Good luck!

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