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mcp/skillhub

Agent Skill

Sandbox Migrate To Next skill

sandbox-migrate-to-nextcloudflare/skillsskills/sandbox-migrate-to-next/SKILL.md

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.

3.1kApache-2.0

always on

45 tokname + description

once used

1,895 tokSKILL.md body

bundled files

0

installs

64kskills.sh

Install the Sandbox Migrate To Next skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/cloudflare/skills --skill sandbox-migrate-to-next

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/cloudflare/skills.git /tmp/skills
mkdir -p ~/.claude/skills
cp -R /tmp/skills/skills/sandbox-migrate-to-next ~/.claude/skills/sandbox-migrate-to-next

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

WhenWhat loadsCost
Every sessionName and description45 tok
When the agent uses itThe SKILL.md instructions1,895 tok
Only if openedNo bundled files—

Until it is used, sandbox-migrate-to-next costs about 30× less than the median MCP server we measured (1,362 tokens on every turn). Installing all 19 skills from cloudflare/skills would load 799 tokens of descriptions. Skills vs MCP study

Checks

Our checks found nothing to flag: it follows the Agent Skills specification's naming and size guidelines and doesn't pipe downloads into a shell.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

  • Migrate stable → Sandbox SDK 1.0 preview (@next)
  • Workflow
  • Hard rules
  • Replacement map
  • Audit
  • Clarify (ask when needed)
  • Upgrade
  • Package and image
  • Code by area
  • Deploy cutover
  • Validate
  • Red flags — stop and fix

More skills from cloudflare/skills

All skills in this repo
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    Discover and choose Cloudflare products for apps, APIs, AI agents, storage, networking, and security. Use for architecture and product selection, including when the user describes a need without naming a Cloudflare product; then find the relevant skill or documentation.

    133k53 tok idle · 5,460 in use
  2. wranglercloudflare/skills

    Run or troubleshoot Wrangler CLI commands in projects that have a wrangler.jsonc, wrangler.json, or wrangler.toml file, including local development, Previews, deployment, and resource management. For new projects and projects without a Wrangler configuration file, use the cf CLI instead.

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  3. workers-best-practicescloudflare/skills

    Cloudflare Workers best practices for production applications. Use when writing, reviewing, or configuring Workers.

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  4. durable-objectscloudflare/skills

    Build, debug, or review Cloudflare Durable Objects code for persistent state and coordination.

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  5. web-perfcloudflare/skills

    Audit, diagnose, or optimize website loading and interaction performance, Core Web Vitals, and Lighthouse performance scores.

    106k26 tok idle · 2,017 in use
  6. agents-sdkcloudflare/skills

    Build, debug, or review Cloudflare Agents SDK applications using the agents package.

    103k19 tok idle · 2,870 in use
  7. cloudflare-email-servicecloudflare/skills

    Implement or troubleshoot Cloudflare Email Sending and Email Routing integrations and their delivery configuration.

    99k21 tok idle · 1,456 in use
  8. turnstile-spincloudflare/skills

    Set up, repair, or migrate to Cloudflare Turnstile bot verification in an existing frontend and backend, including server-side Siteverify.

    89k533 tok idle · 6,533 in use