Agent 37
Agent 37 is a YC Fall 2026 (F26) company. Based in New York City, NY, USA.
About Agent 37
Summary
Agent 37 provides persistent, always-on cloud sandboxes for AI agents, built for developers shipping agent-powered products. Each API call provisions an isolated sandbox per end user, pre-loaded with agents such as Claude Code, Hermes, and Codex, with files, memory, and connected tool credentials that persist across sessions. This replaces the need to configure servers, manage cloud infrastructure, or rebuild agent state between runs.
Business model
Prepaid balance topped up by the customer; compute billed by the minute only while a sandbox is active, and disk billed by the hour until deleted, with no subscription or plan fee.
Go-to-market
Developers and teams building multi-user agent applications are the primary buyers; adoption starts self-serve via a free tier, a single API call, and a pricing calculator on the product page.
From the Y Combinator listing
Persistent sandboxes for agents like hermes, openclaw, claude code
* Ready to Use Instantly: Skip the complex server setup. It comes pre loaded with top AI Agents (like Claude Code and Hermes) so your agents can start working immediately. * Keep Your Work Safe: Unlike other systems that delete everything when they finish a task, these sandboxes remember your files, code, and settings forever until you delete them. * Pay Only for What You Use: Stop paying for idle servers. You pay a tiny fee to store your files, but you only pay for compute power during the exact minutes your AI is actively running. * Zero Infrastructure Headaches: You don’t need to be a senior DevOps engineer or manage complex cloud networks. One simple command handles the entire backend for you. * Connect to Any App: Allow your AI agents to securely log into and interact with everyday tools like Slack, Gmail, and GitHub in just a few clicks.
Facts
- B2B / B2B -> Infrastructure
- New York City, NY, USA
- Active
- Early
Founders (1)
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