A home base for agent systems
Agents that do real work need machines of their own: a workspace that's still there tomorrow, tools installed once, and guard rails a person set. 639 Shell is a cloud built around that.
What it gives an agent system
- Workspaces that stay. Machines keep their disk, and sleep when nobody is using them; the next command wakes them where they left off.
- Throwaway machines next to them. Sandboxes for untrusted code; forks of a running machine for parallel attempts (beta).
- Rules for agents. Standing instructions per account or per machine. Required rules must be acknowledged, by version, before an agent changes anything; lowering them is only possible in the app.
- Limits. Account limits on machines, RAM, cores and disk; a cap on deletes per person, shared across their keys and agents.
- Events. What happened, as a list, a live stream or signed webhooks.
- Platforms. Managed organizations for products that give their own users machines.
Agents connect over MCP (SSH or HTTPS) or the HTTPS API, with Python and TypeScript SDKs. People
use the terminal app: ssh shell.639cloud.com.
Who we are
639 Shell is made by 639cloud, a small independent cloud company running its own servers in the US. It's an alpha, and we're looking for testers. Try it with no sign-up:
ssh try@shell.639cloud.com github:<your-github-username>
More: Getting started · Events and webhooks · Platforms
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