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devsanthoshmk
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sandbox-sdk

Execute untrusted commands and LLM-generated code in isolated Cloudflare Workers sandboxes.

Updated Jan 4, 2026
Search Tags:#code execution#cloudflare#sandbox#workers#durable objects#secure isolation#llm interpreter
One-click install
npx skills add https://github.com/devsanthoshmk/MKS-Agency --skill sandbox-sdk-devsanthoshmk
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: sandbox-sdk
Source: https://github.com/devsanthoshmk/MKS-Agency/tree/main/backend/.agents/skills/sandbox-sdk
Command: npx skills add https://github.com/devsanthoshmk/MKS-Agency --skill sandbox-sdk-devsanthoshmk

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill solves the challenge of executing potentially unsafe or dynamically generated code without exposing your production environment, by running it in isolated Cloudflare Sandbox containers.

Core Features & Use Cases

  • Deterministic command execution: Run shell commands with captured stdout, stderr, and exit codes to support build steps and validations.
  • AI code interpreter support: Execute LLM-generated Python/JavaScript/TypeScript with stateful code contexts for richer outputs.
  • Filesystem and service previews: Create directories, read/write files, and expose sandbox ports to generate preview URLs for temporary HTTP services.

Quick Start

Configure your Cloudflare Worker to re-export the Sandbox class and use getSandbox to create a sandbox instance before calling exec or runCode for the user session.

Frequently Asked Questions about sandbox-sdk

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I run untrusted code safely in Cloudflare Workers?▼

Run LLM-generated code safely by using sandbox.runCode to execute Python/JavaScript/TypeScript within isolated Cloudflare Sandbox containers, maintaining stateful code contexts for richer AI interpreter outputs without risking your environment.

How do I expose a sandbox port for temporary HTTP service previews?▼

Expose sandbox ports to generate preview URLs for temporary HTTP services by configuring wrangler sandbox settings, creating directories or writing files, and using the sandbox file and port APIs with your session identifier.

Does Cloudflare Sandbox support deterministic shell command execution for validation pipelines?▼

Yes, you can execute multiple commands within a single user session by using getSandbox to create a sandbox instance and calling sandbox.exec with explicit per-session identifiers to maintain stateful execution contexts.

What wrangler configuration is needed to use Cloudflare Sandbox with Durable Objects?▼

You need proper wrangler sandbox configuration with Durable Objects and must re-export the Sandbox class from your worker entry point before using getSandbox to instantiate sessions and call execution APIs.

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