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sandbox-sdk

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Build or debug applications that specifically use Cloudflare Sandbox SDK (`@cloudflare/sandbox`) for isolated command execution, code interpretation, files, processes, sessions, or preview URLs. Do not trigger for generic container design, local shell scripting, or unrelated sandbox products.

sandbox-sdk/SKILL.md

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Nov 9, 2026
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# Cloudflare Sandbox SDK

Use current Cloudflare docs and the installed package as the API contract. The
SDK and its container topology evolve quickly; inspect package exports, types,
Wrangler schema, and generated configuration before coding.

## Establish the isolation contract

Identify:

- who chooses the sandbox ID and how it is scoped to a tenant or session;
- which code, files, environment variables, and network access are untrusted;
- what must survive container sleep or recreation;
- which operations need a shared session versus isolated execution; and
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