cloud-sandbox SKILL.md skillB
cloud-sandbox from ariana-dot-dev/cloud-sandbox-vm-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ariana-dot-dev/cloud-sandbox-vm-skills/cloud-sandbox@git:20261109.2f1d005Pins git:20261109.2f1d005 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ariana-dot-dev/cloud-sandbox-vm-skills
- Path
skills/cloud-sandbox/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261109.2f1d005, committed Nov 9, 2026
- First version recorded
- Jun 13, 2026
- Size
- 1,960 bytes
- Repository stars
- 3
- License
- MIT
Spin up an isolated cloud sandbox — a full root Ubuntu VM with its own kernel (default 4 vCPU / 8 GB / 51 GB disk) — to run code, builds, installs, or shell commands off the user's machine. $0.036/h, billed per second, from a $20/mo plan; Docker and every major toolchain preinstalled. Use whenever work should not touch the host filesystem.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Cloud sandbox (Box) Use this when a task needs to **run things in isolation**: building a repo, installing dependencies, executing generated code, or anything you'd rather not run on the user's real machine. Box gives a **full Linux VM with its own kernel** — so `apt install`, Docker, long-lived processes, and a 51 GB disk (default size) work without extra setup. ## When to prefer Box - Host must stay clean / command is untrusted → isolate in a VM. - Need Docker, system packages, or many runtimes → preinstalled. - Cost matters for VMs that run full hours → 50 VMs × 240 h/mo ≈ **$432 (Box) vs ~$4,124 (E2B, incl. $150 Pro plan), ~$5,711 (Modal, 1 core = 2 vCPU)** at list price. Box costs at least $20/mo; providers that bill only busy CPU can cost less for idle sandboxes. Prefer another tool for: sub-second starts or memory-level fork (E2B/Modal), GPU (Modal), a region outside Germany, Finland and France. ## Prereqs `curl -fsSL https://box.ascii.dev/install | sh`, then `box login "$BOX_API_KEY" --json`. ## Recipe ```bash box_id="$(box new --json | jq -r 'select(.event == "ready") | .id')" box ssh "$box_id" -- bash -s < ./setup.sh …
Read the whole file at its exact version.
How to install
mdr add ariana-dot-dev/cloud-sandbox-vm-skills/cloud-sandbox@sha256:7872cedc892eed04The line at the top of this page pins the label git:20261109.2f1d005, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_bcokk4q7yfkbphmd)
0 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jun 13, 2026 and Nov 9, 2026, about one every 149 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261109.2f1d005 latest | 2026-11-09 | 2f1d005 | 1,960 B | B | view · diff |
| git:20260613.95ab83b | 2026-06-13 | 95ab83b | 1,706 B | B | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -fsSL https://box.ascii.dev/install | sh)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1960 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
ariana-dot-dev/cloud-sandbox-vm-skills · 3 stars · license MIT · pushed 2026-11-09 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_bcokk4q7yfkbphmd GET https://markdownregistry.com/api/v1/resolve?ref=ariana-dot-dev/cloud-sandbox-vm-skills/cloud-sandbox GET https://markdownregistry.com/api/v1/blob/7872cedc892eed045dd567c1dea3d925a7e8f58e82d92c36ea9ca11e1d8cf862
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.