Which programming languages are supported by OpenSandbox SDKs?

The project ships SDKs for Python, JavaScript/TypeScript, Java/Kotlin, Go, and C#/.NET, providing a broad range of options for enterprise backends.

Can OpenSandbox be deployed on Kubernetes?

Yes, OpenSandbox supports both Docker and Kubernetes runtimes, allowing teams to host the sandbox infrastructure inside their own VPC or cluster.

Who should avoid using OpenSandbox?

It is not suitable for users who only need an ephemeral REPL behind a single API call and do not have the appetite for running sandbox infrastructure themselves.

OpenSandbox

Open-source sandbox infrastructure for running AI-generated code, agents, and browsers in isolated Docker or Kubernetes environments.

Free· Open source (Apache 2.0); managed pricing not disclosedAgentsModel-agnostic7.0 / 10

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In short

OpenSandbox provides a self-hostable, open-source layer for executing untrusted AI code, shell commands, and browser automation. It is best for teams building coding agents or RL pipelines who need an auditable runtime within their own VPC.

Best for

Pick OpenSandbox if you are building a coding agent or RL pipeline and need an auditable, self-hostable sandbox runtime you can drop into your own Docker or Kubernetes cluster.

Skip if

Skip it if you just want a hosted REPL behind a single API call and have no appetite for running sandbox infrastructure yourself.

OpenSandbox is an Apache 2.0-licensed sandbox layer aimed at developers building agentic AI systems that need to execute untrusted code, run shell commands, drive browsers, or host coding agents like Claude Code and Gemini CLI. It handles the full sandbox lifecycle - provision, monitor, renew, pause/resume, terminate - and exposes in-sandbox primitives such as shell execution, file management, code interpreters, port forwarding, and log/metric streaming across both Docker and Kubernetes runtimes.

It slots into the same niche as E2B, Daytona, and Modal sandboxes, but leans harder on the self-hostable, framework-agnostic angle. SDKs ship for Python, JavaScript/TypeScript, Java/Kotlin, Go, and C#/.NET, which is unusually broad for this category and signals the team is courting enterprise backends, not just Python notebooks. Because the project is open source, the headline price is zero if you run it yourself; managed pricing is not advertised on the landing page.

The most likely buyers are teams shipping coding agents, RL training loops, or browser-automation agents who need a hardened execution layer they can audit and host inside their own VPC. If you only need an ephemeral REPL for an LLM and are happy with a hosted SaaS, lighter options exist.

Editor's take

A credible open-source alternative to the hosted sandbox vendors, with a refreshingly broad SDK matrix that hints at enterprise ambitions. The Apache 2.0 license and Kubernetes support make it a sensible default for teams that cannot send agent code to a third-party cloud. Still early - watch the GitHub activity before betting production on it.

— The AI Tool Bible editorial team

Pros

✅ Apache 2.0 licensed and self-hostable on Docker or Kubernetes
✅ First-class SDKs for Python, JS/TS, Java/Kotlin, Go, and C#/.NET
✅ Built for agent workloads: Claude Code, Gemini CLI, browser automation, RL
✅ Full lifecycle API: provision, pause/resume, renew, terminate, stream logs

Cons

⚠️ No public pricing or managed tier details on the landing page
⚠️ Younger and less battle-tested than E2B or Daytona
⚠️ Operational burden falls on you if you self-host on Kubernetes

Use cases

code-executionagent-sandboxingbrowser-automationremote-developmentrl-environments

Frequently asked

What is the licensing model for OpenSandbox?: OpenSandbox is licensed under Apache 2.0 and is open source. The headline price is zero if you run it yourself, though managed pricing is not disclosed.
Which programming languages are supported by OpenSandbox SDKs?: The project ships SDKs for Python, JavaScript/TypeScript, Java/Kotlin, Go, and C#/.NET, providing a broad range of options for enterprise backends.
What types of workloads is OpenSandbox designed to handle?: It is built for agentic AI systems that need to execute untrusted code, run shell commands, drive browsers, or host coding agents like Claude Code and Gemini CLI.
Can OpenSandbox be deployed on Kubernetes?: Yes, OpenSandbox supports both Docker and Kubernetes runtimes, allowing teams to host the sandbox infrastructure inside their own VPC or cluster.
Who should avoid using OpenSandbox?: It is not suitable for users who only need an ephemeral REPL behind a single API call and do not have the appetite for running sandbox infrastructure themselves.