Render Sandboxes provides every AI agent with its own isolated Linux computer that starts in under a second. Sandboxes can run agents or harnesses such as Claude Code or Codex, and agents can run apps with Docker Compose to test their changes. When an agent goes idle, the sandbox suspends, compute charges stop, and it later wakes with files and memory intact — all on the same platform as the rest of your app.
Render Sandboxes
A computer for every agent
Render Sandboxes Introduction
Key Features
- Isolated Linux computer for each agent
- Sandbox startup in under a second
- Supports agents and harnesses like Claude Code or Codex
- Runs apps with Docker Compose for testing changes
- Configurable network access with per-sandbox domain allowlists
- Automatic suspension when idle, with files and memory preserved on wake
- Runs thousands of sandboxes at once on Render's platform
Use Cases
- Giving coding agents isolated environments to run and test code
- Testing an agent's changes by running the app with Docker Compose
- Running many concurrent agent workloads at scale
Why Startups Use It
Startups building agent-powered products get fast, isolated compute without managing infrastructure. Sandboxes scale to thousands concurrently, pause billing when idle, and run alongside the rest of your app on the same platform.
Alternative Options
E2B, Daytona, Modal
Frequently Asked Questions
What is Render Sandboxes?
Render Sandboxes gives every AI agent its own isolated Linux computer that starts in under a second and can run agents or harnesses like Claude Code or Codex.
What happens when an agent goes idle?
The sandbox suspends and compute charges stop. When it wakes, files and memory are intact.
Can sandboxes access the network?
Yes, you decide which domains each sandbox can reach.
More About Render Sandboxes
PricingPaid
Listed DateNov 05, 2026
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