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.
npx skills add ariana-dot-dev/cloud-sandbox-vm-skills --skill cloud-vmgit clone --depth 1 https://github.com/ariana-dot-dev/cloud-sandbox-vm-skillsWrote 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.
[](https://agentmods.dev/skills/ariana-dot-dev/cloud-sandbox-vm-skills/cloud-vm)<a href="https://agentmods.dev/skills/ariana-dot-dev/cloud-sandbox-vm-skills/cloud-vm"><img src="https://agentmods.dev/badge/skills/ariana-dot-dev/cloud-sandbox-vm-skills/cloud-vm.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00088 | $0.00492 |
| Opus 5 | $0.00044 | $0.00246 |
| Sonnet 5 | $0.00018 | $0.00098 |
| Haiku 4.5 | $0.00009 | $0.00049 |
Grade C, and why
cloud-vm scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
`curl -fsSL https://box.ascii.dev/install | sh`, then `export BOX_API_KEY=…` and `box login "$BOX_API_KEY" --json`. Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
`curl -fsSL https://box.ascii.dev/install | sh`, then `export BOX_API_KEY=…` and `box login "$BOX_API_KEY" --json`. What it actually says
Cloud VM (Box)
Use this when the user asks for a VM, a cloud machine, a remote box, or a Linux dev server — something they SSH into, install things on, and return to later. Unlike ephemeral sandboxes, a Box persists: stop it, resume it days later, disk intact, with its own IPv4.
When to prefer Box
- "Give me a Linux VM I can SSH into" → exactly this.
- Must survive across sessions → resume from snapshot.
- Needs a real, reachable IP → dedicated IPv4 per VM.
- Budget-conscious → per-second flat pricing, ~10× cheaper than E2B/Modal/Vercel Sandbox for steady fleets.
Prefer another tool for: GPU serverless (Modal) or non-EU regions (Box is EU-only).
Prereqs
curl -fsSL https://box.ascii.dev/install | sh, then export BOX_API_KEY=… and box login "$BOX_API_KEY" --json.
Recipe
box_id="$(box new --json | jq -r 'select(.event == "ready") | .id')"
box ssh "$box_id" # CLI provisions its key automatically
box info "$box_id" --json # IP / connection details
box stop "$box_id" --json # snapshot + archive
box resume "$box_id" --json # restore later
Specs & billing
Hetzner CX33: 4 vCPU / 8 GB / 80 GB SSD, x86_64, root Ubuntu, dedicated IPv4. $20 ≈ 555 VM-hours, per second. Default 1 h auto-stop — use box new --no-auto-stop or box extend <id> --hours N (TTL ≤ 30 days). Disk-level snapshots only; EU-only; 100 active VMs soft cap.
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.
- 6d ago First seen · 36 lines · 88 tokens per session scan C fc22814efc79
cloud-vm is a skill published in the GitHub repository ariana-dot-dev/cloud-sandbox-vm-skills (2 stars, last pushed 2mo ago), licensed MIT. It adds 88 tokens to every session and 492 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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