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sandbox-migrate-to-next

Migrate Cloudflare Sandbox apps from stable @cloudflare/sandbox to @cloudflare/sandbox@next (SDK 1.0 preview). Use sandbox-next for apps already on the preview.

plugins/cloudflare-skills/skills/sandbox-migrate-to-next/SKILL.md

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# Migrate stable → Sandbox SDK 1.0 preview (`@next`)

**Perform** the port. Follow the steps in order. Depth lives in docs—fetch the linked page when a step needs detail.

Human guide: [Migrate](https://developers.cloudflare.com/sandbox/sdk/migrate/index.md) · [1.0 preview](https://developers.cloudflare.com/sandbox/index.md)

**New projects** should start on `@next` (**`sandbox-next`**), not this skill. **Day-to-day stable work** → **`sandbox-stable`**. Deprecated-API cleanup **without** moving to `@next` → [2026 deprecation guide](https://developers.cloudflare.com/sandbox/sdk/migrate/index.md) first if needed.

Existing apps should migrate **when you can**, so you are ready when 1.0 becomes the stable release. Do **not** force production cutover without the user agreeing.

**Prefer installed `@next` types and the migrate doc over memory.**

## Workflow