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shellbox-cli

shellbox-cli is a skill for Claude Code from joegoldin/agent-skills. It costs 39 tokens per session (3,828 once invoked), scanned C, original, no licence file.

A workflow for using shellbox.dev, a service that provides temporary Linux virtual machines that can be accessed remotely.

In plain words
What is it for?
It is for managing virtual-machine lifecycles, SSH access, keepalive and scheduled modes, custom domains, IPv6 and mosh connections, billing, SSH keys, file transfers, and remote development setups.
Why use it?
It organizes the steps for creating, managing, connecting to, and transferring files to these temporary machines.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

not rated 1repo changed 3d ago C scan 39 tokens no licence

Good fit It is for managing virtual-machine lifecycles, SSH access, keepalive and scheduled modes, custom domains, IPv6 and mosh connections, billing, SSH keys, file transfers, and remote development setups.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/joegoldin/agent-skills/shellbox-cli
View source ↗ joegoldin/agent-skills
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 joegoldin/agent-skills --skill shellbox-cli
Clone the repo
git clone --depth 1 https://github.com/joegoldin/agent-skills

Made for: Claude Code.

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 shellbox-cli

README.md
[![agentmods](https://agentmods.dev/badge/skills/joegoldin/agent-skills/shellbox-cli/github.svg)](https://agentmods.dev/skills/joegoldin/agent-skills/shellbox-cli)
Your own site
<a href="https://agentmods.dev/skills/joegoldin/agent-skills/shellbox-cli"><img src="https://agentmods.dev/badge/skills/joegoldin/agent-skills/shellbox-cli/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 shellbox-cli

Your own site · 80×15
<a href="https://agentmods.dev/skills/joegoldin/agent-skills/shellbox-cli"><img src="https://agentmods.dev/badge/skills/joegoldin/agent-skills/shellbox-cli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,828 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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 $0.00039 $0.03828
Opus 5.5 $0.00016 $0.01531
Sonnet 5.5 $0.00008 $0.00766
Haiku 4.5 $0.00004 $0.00383

Measured 3d ago against content hash 7073747fc6ff, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

shellbox-cli 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 3d 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.

Reaches for credential fileshighPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

ssh-keygen -t ed25519 # only if ~/.ssh/id_ed25519 doesn't exist

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

sh <(curl --proto '=https' --tlsv1.2 -L https://nixos.org/nix/install) --daemon
skills/shellbox-cli/SKILL.md · 284 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

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago Changed 7073747fc6ff
  2. 1mo ago Changed · -69 tokens per session 5b53224510c8
  3. 2mo ago First seen · 284 lines · 108 tokens per session scan C 3eceb39654c9

Subscribe to this mod's changes

shellbox-cli is a skill published in the GitHub repository joegoldin/agent-skills (1 stars, last pushed yesterday), with no licence file. It adds 39 tokens to every session and 3,828 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 2 findings (reaches for credential files, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

CloudDevOps and cloud
Related

shellbox-cli compared with skills from other repositories

shellbox-cli next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
shellbox-clijoegoldin/agent-skillsSkill1yesterdaynoneC39Claude Code
gke-compute-classesgoogle/skillsSkill22kyesterdayApache-2.0A83Claude Code, Codex
gke-reliabilitygoogle/skillsSkill22kyesterdayApache-2.0A85Claude Code, Codex
gke-workload-securitygoogle/skillsSkill22kyesterdayApache-2.0A171Claude Code, Codex
cloud-architectJeffallan/claude-skillsSkill12k7d agoMITA71Claude Code
nemo-automodel-launcher-configNVIDIA/skillsSkill3.9kyesterdayApache-2.0A30Claude Code
azure-mgmt-botservice-dotnetmicrosoft/skillsSkill3.2kyesterdayMITA78Claude Code