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Rayzerrek
RayzerrekCOMMUNITY
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sandbox-sdk

Build isolated Cloudflare Workers sandboxes for executing untrusted code.

Updated Jan 30, 2026
Search Tags:#code execution#cloudflare#sandbox#workers#code interpreter#preview urls#secure runtime
One-click install
npx skills add https://github.com/Rayzerrek/dotfiles --skill sandbox-sdk-rayzerrek
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: sandbox-sdk
Source: https://github.com/Rayzerrek/dotfiles/tree/main/.pi/agent/skills/sandbox-sdk
Command: npx skills add https://github.com/Rayzerrek/dotfiles --skill sandbox-sdk-rayzerrek

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you safely execute untrusted code and build isolated runtime environments without exposing your main system or workflow to risk.

Core Features & Use Cases

  • Secure code execution: Run shell commands and generated code inside Cloudflare sandboxes with isolated state.
  • AI developer workflows: Support code interpreters, interactive coding agents, and automated testing or build pipelines.
  • File and service operations: Create, read, write, and list files, expose local ports for preview URLs, and manage sandbox lifecycle cleanup.

Quick Start

Ask the assistant to build a Cloudflare Sandbox SDK worker that runs untrusted code, manages files, and exposes a preview URL for a local service.

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 securely on Cloudflare Workers?▼

You run untrusted code securely on Cloudflare Workers by building isolated sandboxes with the Sandbox SDK, managing durable object bindings to execute shell commands and generated code without exposing your main workflow to risk.

What is a secure sandbox for AI code interpreters and agent workflows?▼

A secure sandbox for AI code interpreters is an isolated runtime environment built on Cloudflare Workers that executes generated code, manages files, and exposes local ports for preview URLs within interactive coding agent workflows.

How do I expose local ports for preview URLs in a sandbox environment?▼

To expose local ports for preview URLs in a sandbox environment, you use the Sandbox SDK to manage file, code, and port operations, allowing your isolated Cloudflare Workers runtime to serve interactive local services externally.

Does the Sandbox SDK require durable object bindings for code execution?▼

Yes, secure code execution with the Sandbox SDK requires durable object bindings to properly manage the sandbox lifecycle, exports, and isolated state when running untrusted code on Cloudflare Workers.

What are the limitations of running untrusted code in Cloudflare sandboxes?▼

Limitations of running untrusted code in Cloudflare sandboxes include the need for explicit lifecycle management, manual configuration of durable object bindings, and careful handling of sandbox exports to maintain isolated state.

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