sandbox-next agent skill by cloudflare
Builds and maintains Cloudflare Sandbox apps on the @cloudflare/sandbox@next package, the SDK 1.0 preview.
At a glance
| Publisher | Cloudflare Official |
|---|---|
| Repository | cloudflare/skills (19 listed skills) |
| Category | DevOps and Cloud |
| License | Apache-2.0 |
| Last commit | October 15, 2026 (repository) |
| SKILL.md | 87 lines, 715 words |
| Bundled files | 3 files, including references |
| Quality score | 79/100 · C Passes all seven graded checks |
| Security scan | Not scanned |
| README badge | Get the listing badge and raise the score |
Before you install
Read from the skill's files at the directory's October 19, 2026 snapshot: what ships with it, what its code reads, and the terms it is published under.
- Bundled scripts: none.
- License: Apache-2.0, an open-source or open-content license.
Install sandbox-next
The skills CLI works with Claude Code, Codex, Cursor and other agents; the other routes copy the folder by hand.
npx skills add https://github.com/cloudflare/skills/tree/main/skills/sandbox-nexttmp="$(mktemp -d)"
git clone --depth 1 https://github.com/cloudflare/skills.git "$tmp/repo"
mkdir -p .claude/skills
cp -R "$tmp/repo/"skills/sandbox-next .claude/skills/
rm -rf "$tmp"python3 ~/.codex/skills/.system/skill-installer/scripts/install-skill-from-github.py \
--repo cloudflare/skills \
--path skills/sandbox-nextcloudflare/skills is third-party code. Read SKILL.md and any bundled scripts before you install it.
How the author describes it
Build or maintain Cloudflare Sandbox apps on @cloudflare/sandbox@next (SDK 1.0 preview). Use sandbox-migrate-to-next when porting a stable app.
From the description field of SKILL.md. Agents read this line to decide when to load the skill.
Sections in SKILL.md
- 1. Gate — confirm the package line
- 2. Contract — non-negotiables
- 3. Retrieve — open the doc for the task
- 4. Before you ship
Files in the skill folder
SKILL.mdreferences/api-quick-ref.mdreferences/examples.md
Suede Skill Check: 79/100 · C
Report snapshot · · graded-v2
The rubric totals 100 points; published scores are capped at 99. Security scan: not scanned.
Source revision: 86505e44f87d. Report version 3fdbd1b0f4a7. Badge URLs follow the latest listing; save the report to keep this version.
Download report · Request a fresh review
What to review next
- Boundary clause: 0 of 4 points. 4 when the description says when not to use the skill (“Not for …”, “Do not use …”, “Use … instead”).
- Example request: 0 of 3 points. 3 when the description quotes an example request (3–60 characters in quotation marks).
- Description length: 3 of 5 points. 5 for 150–600 characters; 3 for 100–900; 1 for 50–1,024.
Add declarations and bundled files when they describe the skill’s actual needs. Update the source, then request a fresh review with the changed commit or PR.
sandbox-next passes the required frontmatter check and all seven graded checks, which cover the SKILL.md format, a declared license and a commit in the last year. Those checks earn 56 of the score’s points; the rest come from description quality, instruction depth, bundled files, maintenance and curated-list citations. How the score works.
See the checks and points
| Check | Result |
|---|---|
| Frontmatter parses and declares a name and a description | Pass |
| Name uses lowercase letters, digits and hyphens, 64 characters or fewer | Pass |
| Name matches the skill's folder name | Pass |
| Description is between 50 and 1,024 characters | Pass |
| Description says when an agent should use the skill | Pass |
| SKILL.md body is 500 lines or fewer | Pass |
| A license is declared in the frontmatter or the repository | Pass |
| Repository has a commit in the last 12 months | Pass |
| Score component | Points |
|---|---|
| Structural checks | 56 of 56 |
| Description length | 3 of 5 |
| Boundary clause | 0 of 4 |
| Example request | 0 of 3 |
| Instruction depth | 7 of 7 |
| Reference files | 3 of 3 |
| Bundled scripts | 0 of 2 |
| Recent maintenance | 9 of 9 |
| Curated-list citations | 1 of 7 |
| Tool permissions declared | 0 of 2 |
| Compatibility declared | 0 of 2 |
Show the listing and raise the score
sandbox-next is listed with 79/100 · C. This badge links to its Suede listing. Skills scoring 80–99 add a numeric and a letter quality shield; the largest open points for sandbox-next are boundary clause (4), example request (3) and bundled scripts (2). Send your repository and the points you want to raise, then request a fresh review after updating the skill.
[](https://skills.suedeai.ai/directory/cloudflare/skills/sandbox-next/)<a href="https://skills.suedeai.ai/directory/cloudflare/skills/sandbox-next/"><img src="https://skills.suedeai.ai/directory/badge.svg" alt="Suede Skills Directory: listed" height="20"></a>Where this skill is cited
cloudflare/skills appears in 1 curated list: heilcheng/awesome-agent-skills.