Sandbox SDK — stable package

Isolated Linux environments on Cloudflare Containers, driven from Workers.

Prefer the main Sandbox docs and installed stable types over memory. This skill is a gate, a contract, and a retrieval map—not a full manual.

This line is the current stable default npm package. The main Sandbox documentation describes it. Existing apps can stay here and keep shipping.

We recommend new projects on @cloudflare/sandbox@next with sandbox-next. When you can, plan a move with sandbox-migrate-to-next so you are ready when 1.0 becomes the stable release. Do not force that port unless the user asks.

1. Gate — confirm the package line

Before writing code, inspect the app: