sandbox-migrate-to-next

sandbox-migrate-to-next is a skill for Claude Code, Codex from freekmurze/dotfiles. It costs 45 tokens per session (1,947 once invoked), scanned A, original, no licence file.

A migration guide for moving Cloudflare Sandbox applications from the stable @cloudflare/sandbox package to the preview @cloudflare/sandbox@next package. Cloudflare Sandbox is a managed environment for running application code.

In plain words
What is it for?
Use it to port a stable Cloudflare Sandbox app to the preview SDK; use the sandbox-next guide after the migration.
Why use it?
It addresses the package and code changes involved in moving an existing app between the stable and preview SDKs.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to port a stable Cloudflare Sandbox app to the preview SDK; use the sandbox-next guide after the migration.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/freekmurze/dotfiles/sandbox-migrate-to-next
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add freekmurze/dotfiles --skill sandbox-migrate-to-next
Clone the repo
git clone --depth 1 https://github.com/freekmurze/dotfiles

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sandbox-migrate-to-next

README.md
[![agentmods](https://agentmods.dev/badge/skills/freekmurze/dotfiles/sandbox-migrate-to-next/github.svg)](https://agentmods.dev/skills/freekmurze/dotfiles/sandbox-migrate-to-next)
Your own site
<a href="https://agentmods.dev/skills/freekmurze/dotfiles/sandbox-migrate-to-next"><img src="https://agentmods.dev/badge/skills/freekmurze/dotfiles/sandbox-migrate-to-next/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for sandbox-migrate-to-next

Your own site · 80×15
<a href="https://agentmods.dev/skills/freekmurze/dotfiles/sandbox-migrate-to-next"><img src="https://agentmods.dev/badge/skills/freekmurze/dotfiles/sandbox-migrate-to-next.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,947 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.01947
Opus 5.5 $0.00018 $0.00779
Sonnet 5.5 $0.00009 $0.00389
Haiku 4.5 $0.00005 $0.00195

Measured 11d ago against content hash cd070c652654, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sandbox-migrate-to-next scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

config/claude/skills/sandbox-migrate-to-next/SKILL.md · 186 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 11d ago First seen · 186 lines · 45 tokens per session scan A cd070c652654

Subscribe to this mod's changes

sandbox-migrate-to-next is a skill published in the GitHub repository freekmurze/dotfiles (1,014 stars, last pushed 7d ago), with no licence file. It adds 45 tokens to every session and 1,947 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-15.

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