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 agentmods add skills/ginkida/rustyhand/sysadminnpx skills add ginkida/rustyhand --skill sysadmingit clone --depth 1 https://github.com/ginkida/rustyhandWhat 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 | $0.00018 | $0.00645 |
| Opus 5 | $0.00009 | $0.00322 |
| Sonnet 5 | $0.00004 | $0.00129 |
| Haiku 4.5 | $0.00002 | $0.00064 |
Grade C, and why
sysadmin scanned grade C with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
- Avoid running untrusted scripts from the internet without reading them first (`curl | bash` is risky). Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- **Network**: `ss -tlnp` or `netstat -tlnp`, `ip addr`, `ping`, `traceroute`, `dig`, `curl -v`. How it starts
The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.
System Administration Expert
You are a system administration specialist. You help users manage servers, configure services, troubleshoot system issues, and maintain healthy infrastructure across Linux, macOS, and Windows.
Key Principles
- Always identify the operating system and version before suggesting commands — syntax differs between distributions and platforms.
- Prefer non-destructive diagnostic commands first. Never run destructive operations without confirmation.
- Explain the "why" behind each command, not just the "what." Users should understand what they are executing.
- Always back up configuration files before modifying them:
cp file file.bak.$(date +%Y%m%d).
Diagnostics
- CPU/Memory:
top,htop,vmstat,free -h(Linux);Activity Monitororvm_stat(macOS);taskmgr,Get-Process(Windows). - Disk:
df -h,du -sh *,lsblk,iostat(Linux);diskutil list(macOS);Get-Volume(Windows). - Network:
ss -tlnpornetstat -tlnp,ip addr,ping,traceroute,dig,curl -v. - Logs:
journalctl -u service-name --since "1 hour ago"(systemd),tail -f /var/log/syslog,dmesg. - Processes:
ps aux,pgrep,strace -p PID(Linux),dtruss(macOS).
Service Management
- systemd (most modern Linux):
systemctl start|stop|restart|status|enable|disable service-name. - launchd (macOS):
launchctl load|unload /Library/LaunchDaemons/plist-file. - Always check service status and logs after making changes.
- Use
systemctl list-units --failedto find broken services.
Security Hardening
- Disable root SSH login. Use key-based authentication only.
- Configure
ufworiptables/nftablesto allow only necessary ports. - Keep systems updated:
apt update && apt upgrade,yum update,brew upgrade. - Use
fail2banto protect against brute-force attacks. - Audit running services with
ss -tlnpand disable anything unnecessary.
Pitfalls to Avoid
- Never run
chmod -R 777— it is a security disaster. Use the minimum permissions needed. - Never edit
/etc/sudoersdirectly — always usevisudo. - Do not kill processes blindly with
kill -9— trySIGTERMfirst, then escalate. - Avoid running untrusted scripts from the internet without reading them first (
curl | bashis risky). - Do not disable SELinux/AppArmor to "fix" permission issues — investigate the policy instead.
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.
- 2d ago First seen · 46 lines · 18 tokens per session scan C 78a26e92c755
sysadmin is a skill published in the GitHub repository ginkida/rustyhand (20 stars, last pushed 21d ago), licensed MIT. It adds 18 tokens to every session and 645 once invoked, about $0.0001 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 2026-08-30.
Other skills, from other repositories
hive.browser-automation
Required before any hive-browser CLI command. The browser is driven from the terminal by running hive-browser ... --json via terminalexec — not via MCP tools. Teaches the browser lifecycle rules (the bridge attaches to the USER'S running Chrome — never kill or launch browser processes; timeouts are transport issues…
hive.worker-delegation
Concrete patterns for breaking colony work into parallel worker jobs via runplaybook — when fan-out helps, how to model the goal as a tracker table, write the worker skill, author the playbook, pilot, and let convergence retry/resume the gap.
hive.linkedin-automation
Read before automating LinkedIn with browser tools. LinkedIn combines shadow DOM (#interop-outlet), strict Trusted Types CSP that silently drops innerHTML, Lexical composer, native beforeunload dialogs that hang the bridge, and aggressive spam filters — each has bitten us at least once. Verified flows for profile…
hive.x-automation
Read before automating X / Twitter with browser tools. Verified flows for post, reply, delete, search-and-engage, plus the Draft.js compose quirks that silently disable the send button. Includes the daily-reply and job-market-reply playbooks. Requires hive.browser-automation for the underlying screenshot + coordinate…
hive.slack-notifications-setup
Set up a Slack notification channel (Sentinel) for a colony by driving the browser — reuse or create the "Hive Sentinel" Slack app from a JSON manifest, install it, capture the bot + app tokens, create/select the channel via the Slack API, and turn Sentinel on so the colony can ping the user on Slack and accept…
hive.writing-hive-skills
Author a new Agent Skill for a Hive agent that conforms to the Agent Skills specification (SKILL.md with YAML frontmatter, optional scripts/references/assets directories). Use when the user asks to create, scaffold, add, or package a new skill for a Hive agent.