Getting it into your agent
There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.
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.
[](https://agentmods.dev/skills/arturseo-geo/claude-code-skills/vps-ubuntu)<a href="https://agentmods.dev/skills/arturseo-geo/claude-code-skills/vps-ubuntu"><img src="https://agentmods.dev/badge/skills/arturseo-geo/claude-code-skills/vps-ubuntu/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.
<a href="https://agentmods.dev/skills/arturseo-geo/claude-code-skills/vps-ubuntu"><img src="https://agentmods.dev/badge/skills/arturseo-geo/claude-code-skills/vps-ubuntu.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00231 | $0.02584 |
| Opus 5 | $0.00115 | $0.01292 |
| Sonnet 5 | $0.00046 | $0.00517 |
| Haiku 4.5 | $0.00023 | $0.00258 |
Grade D, and why
vps-ubuntu scanned grade D with 5 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.
Asks for rootlowPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
usermod -aG sudo deploy Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Reaches for credential filesmediumPrivilege escalation
SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.
cp /root/.ssh/authorized_keys /home/deploy/.ssh/ Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Downloads and executes remote codemediumSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://tailscale.com/install.sh | sh Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Recursive force deletemediumDestructive command
rm -rf with a variable or a broad path is one typo away from removing the wrong tree.
- `rm -rf` anything — STOP, confirm path and scope Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
apt install -y curl wget git unzip htop tmux fail2ban ufw \ How it starts
The opening of the file, as written. The whole thing — 318 lines — stays where its author put it; the contents beside it link to each section on GitHub.
VPS Ubuntu Management Skill
This skill covers the full lifecycle of Ubuntu VPS management. Load the relevant reference file for detailed commands:
| Topic | Reference file | Load when... |
|---|---|---|
| Firewall & network | references/firewall.md |
UFW, iptables, open ports, rate limiting |
| Security hardening | references/security.md |
SSH, fail2ban, kernel params, auditing, rootkits, ClamAV |
| Backups | references/backups.md |
rsync, Borg, rclone, cloud sync, backup testing |
| Monitoring & alerts | references/monitoring.md |
disk, memory, CPU, log analysis, alerting, health checks |
| Cron jobs | references/cron.md |
crontab syntax, scheduling, debugging, systemd timers |
| Web server | references/webserver.md |
Nginx, SSL, PM2, reverse proxy, compression, rate limiting |
| Containers | references/containers.md |
Docker, Docker Compose, networking, image cleanup |
Server Provisioning — Fresh Ubuntu VPS
Run these steps immediately after first SSH login to a new server:
# 1. Update system
apt update && apt upgrade -y
# 2. Set hostname and timezone
hostnamectl set-hostname myserver
timedatectl set-timezone UTC # or your preferred timezone
# 3. Create deploy user (never run apps as root)
adduser deploy
usermod -aG sudo deploy
# 4. Copy SSH key to deploy user
mkdir -p /home/deploy/.ssh
cp /root/.ssh/authorized_keys /home/deploy/.ssh/
chown -R deploy:deploy /home/deploy/.ssh
chmod 700 /home/deploy/.ssh && chmod 600 /home/deploy/.ssh/authorized_keys
# 5. Firewall — allow SSH before enabling
ufw default deny incoming && ufw default allow outgoing
ufw allow 22/tcp
ufw allow 80/tcp
ufw allow 443/tcp
ufw enable
# 6. Harden SSH (see references/security.md for full config)
sed -i 's/#PermitRootLogin yes/PermitRootLogin no/' /etc/ssh/sshd_config
sed -i 's/#PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_config
sshd -t && systemctl reload ssh
# 7. Install essentials
apt install -y curl wget git unzip htop tmux fail2ban ufw \
certbot python3-certbot-nginx logwatch unattended-upgrades
# 8. Enable automatic security updates
dpkg-reconfigure --priority=low unattended-upgrades
# 9. Set up fail2ban
cp /etc/fail2ban/jail.conf /etc/fail2ban/jail.local
systemctl enable --now fail2ban
What ships with it
7 files 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.
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.
- 11d ago First seen · 318 lines · 231 tokens per session scan D 3f26376d119f
vps-ubuntu is a skill published in the GitHub repository arturseo-geo/claude-code-skills (11 stars, last pushed 5mo ago), licensed MIT. It adds 231 tokens to every session and 2,584 once invoked, about $0.0012 per session on Opus 5. A static security scan graded it D with 5 findings (asks for root, reaches for credential files, downloads and executes remote code). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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