What are Deno Sandboxes?

Deno Sandboxes are secure, isolated Linux microVMs powered by Firecracker (the same technology as AWS Lambda) that allow you to run untrusted code without risking the security of your host system.

Does it support Deno Deploy?

Absolutely. The Deno Sandbox SDK is designed to work seamlessly within the Deno Deploy environment, making it easy to build cloud-native secure execution services.

Can I use Deno Sandboxes for AI agent tools?

Yes, it is a primary use case. It allows AI agents like Claude to generate and execute code safely by wrapping the execution in a sandbox with restricted permissions.

How do I manage the sandbox lifecycle?

The skill supports the 'await using' pattern, which automatically disposes of the sandbox and its resources as soon as the execution scope ends, preventing resource leaks.

Deno Secure Sandboxes

Name: Deno Secure Sandboxes
Author: donjo

bydonjo

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Security & Testing

Executes untrusted code in secure, isolated Linux microVMs for AI agents and multi-tenant applications.

About

Deno Secure Sandboxes provide a robust interface for managing isolated execution environments powered by Firecracker microVM technology. This skill allows developers to safely run untrusted user submissions or AI-generated scripts with dedicated CPU, memory, and disk space, ensuring complete isolation from the host system. It is essential for building code playgrounds, automated testing suites, and AI-driven tool execution systems where security, resource containment, and rapid startup times are paramount.

Key Features

Firecracker microVM isolation for secure code execution
Configurable resource limits for CPU, memory, and disk
Seamless integration with Deno Deploy for cloud scaling
2 GitHub stars
Automatic lifecycle management with 'await using' syntax
Full Deno and TypeScript runtime support in-sandbox

Use Cases

Building secure online code playgrounds and REPLs
Running multi-tenant automated tests in isolated environments
Executing AI-generated scripts for tool-use and data analysis

About

Key Features

Firecracker microVM isolation for secure code execution
Configurable resource limits for CPU, memory, and disk
Seamless integration with Deno Deploy for cloud scaling
2 GitHub stars
Automatic lifecycle management with 'await using' syntax
Full Deno and TypeScript runtime support in-sandbox

Use Cases

Building secure online code playgrounds and REPLs
Running multi-tenant automated tests in isolated environments
Executing AI-generated scripts for tool-use and data analysis