Sandbox SDK 0.x

Last updated Sep 30, 2026 Available on Workers Paid plan

Note

These pages document @cloudflare/sandbox 0.x for existing applications. Version 1.0 is a different library that works with a container you start from a Durable Object. To move an existing application to 1.0, refer to Migrate from Sandbox SDK 0.x. To start new work, refer to Sandboxes.

Sandbox SDK 0.x gives your Worker a Sandbox class built on Containers. A sandbox starts its container on first use, and its methods run commands, manage files, run background processes, and expose services in that container.

Move to 1.0

Migrate from Sandbox SDK 0.x

Move a 0.12 application to a Durable Object that starts its own container.

API map

Find what replaces each 0.12 API in 1.0.

Maintain a 0.x application

Getting started

Create a Worker that runs Python code in a 0.x sandbox.

How-to guides

Run commands, manage files, expose services, and deploy with Sandbox SDK 0.x.

API reference

Look up the methods of the 0.x Sandbox class.

Tutorials

Build complete applications with Sandbox SDK 0.x.

Coding agents

Install Cloudflare Skills ↗︎ for your agent (Agent setup). Use sandbox-stable with these Sandbox SDK docs.

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Sandbox SDK 0.x - 图1Docs

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description: Sandbox SDK 0.x API for executing code, managing files, running processes, and exposing services. title: API reference image: https://developers.cloudflare.com/sandbox/sdk/api/og.png?v=2992d25c6889cd46

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