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Use when building or changing Cloudflare Sandbox apps on the current stable @cloudflare/sandbox package (default npm tag)—commands, sessions, files, ports,…
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: Check Must match npm dependency Default @cloudflare/sandbox (not @next / preview tags) Container image Matching stable image (not cloudflare/sandbox:next)
don't have the plugin yet? install it then click "run inline in claude" again.