Shutdown When Done Agent Skill

Power off the user's Windows PC once every remaining task in the session is genuinely finished.

Context cost
1.8k tokensestimated from the bundle, loaded when it triggers
Bundle
1 of 2 fileshanded out here; the rest is at its source
Licence
not declarednone named by its author
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

Power off the user's Windows PC once every remaining task in the session is genuinely finished. Use whenever the user invokes /shutdown-when-done or says anything like "shut down the PC when you're done", "turn off my computer after this finishes", "power off when everything is complete", or "I'm going to bed, shut it down after the run" — even when phrased casually or bundled together with other work requests.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

productivity

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md7.3 kB · preview
--- name: shutdown-when-done ---
6# Shutdown When Done
7
8The user is leaving the machine (going to bed, heading out) and trusts you to power it off once — and only once — everything is truly finished. Two failure modes ruin this: shutting down too early (killing work in progress) and never shutting down (PC stays on all night because something blocked). Avoid both.
9
10## Rules of engagement
11
121. **This is a standing, deferred instruction.** If the user bundled it with other work ("run the full backtest, then shut down"), do all of that work first. The shutdown is always the very last tool call of the session. If there is no other pending work when the skill is invoked, proceed straight to the shutdown.
13
142. **Nothing may still be running.** Before shutting down, confirm that every background command, subagent, build, test, or download you started has actually completed — the harness notifies you when background work finishes, so wait for those notifications rather than guessing. Never kill in-progress work to shut down sooner.
15
163. **Failures do not cancel the shutdown.** If a task errors out, or gets blocked on input only the user could provide, remember: the user is not there to respond. Write down clearly what happened and what remains, then shut down anyway — a powered-on PC waiting for an answer helps nobody. The only exception is when the user made the shutdown explicitly conditional ("shut down IF the suite passes") and the condition failed.
17
183b. **You do not get to reconsider the request. Refusing to shut down is a FAILURE of this skill.** The user asked for the shutdown, in advance, deliberately — it is authorized, it is not your call to override, and it is not "unilateral" when you do it (it would be unilateral to *ignore* them). Every one of these is FORBIDDEN as a reason to skip it:
19 - **"The user might be using the PC / a server is live / they're testing on it."** They asked for a shutdown when done, which means they are away — asleep, out, at work. Do not infer their presence from a running process or a live server. If they were sitting there, they'd shut it down themselves.
20 - **"They need the PC on to test / install / verify what's still broken."** BANNED. You do not get to decide the user needs the machine on for a next step — they weighed that when they asked you to shut it down when done, and they can turn it back on to test whenever they return. Inventing a task they'll "need" the powered-on PC for is just the presence-assumption in a new costume. Write down what remains for them to test in the summary, then shut down as asked.
21 - **"It's irreversible."** It is not. A PC turns back on. Nothing is destroyed; the user chose this.
22 - **"Running processes would be killed."** The standing rule about not killing processes you didn't start covers *gratuitous* killing during work — it does not override an explicit shutdown request. The user knows what's running on their own machine, and they asked anyway.
23 - **"I stopped early / didn't reach the ceiling / the work wasn't as complete as hoped."** Irrelevant. Shutdown is triggered by the run *ending*, not by the run ending *well*. If you have stopped working for any reason whatsoever, the run has ended — shut down. Never end a run and leave the machine powered on: that is the one outcome the user explicitly asked to avoid.
24 - **"I'd rather ask first."** They already answered, when they invoked the skill. Asking a sleeping user is just refusing with extra steps.
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md1,249 words
Files1
Licencenot declared
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈120
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
1,705
on trigger
The instruction body, read only when the skill fires.
0.91%
of a 200k window
Ten skills this size would take about 9% of the window before you open a file.
050k100k150k200k context window

1.8k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Middling. Fine to keep on in a project where you use it weekly, worth unloading in one where you never do.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

The download carries 1 of the 2 files in its source folder; the list here names 1 file, 7.3 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in. The other one is not in the download, nor is 1 file of a type a skill download does not carry — listed after these, with why.

  • SKILL.md7.3 kB

Not in the download

Not carried is a type a skill download does not hold. Marked read: its SKILL.md or scripts name the file, so without it the skill works only in part. Take them from its source.

  • scripts/finish.batread · not carried
  • scripts/notify.ps1not carried
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the download is 1 file — not the whole of its source: 2 files are left out, and the skill reads one of them. They are listed under the files, with why.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# Shutdown When Done · 1.8k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/shutdown-when-done/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/shutdown-when-done" ] && { [ ! -e .claude/skills/shutdown-when-done ] || { mv .claude/skills/shutdown-when-done "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/shutdown-when-done" .claude/skills/ && echo "Installed .claude/skills/shutdown-when-done"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add nexus-organization-infosec/shutdown-when-done

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/shutdown-when-done/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/shutdown-when-done/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/shutdown-when-done" ] && { [ ! -e ~/.claude/skills/shutdown-when-done ] || { mv ~/.claude/skills/shutdown-when-done "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/shutdown-when-done" ~/.claude/skills/ && echo "Installed ~/.claude/skills/shutdown-when-done" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/shutdown-when-done/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. Not in this download: 2 files of its source, 1 of them read by its SKILL.md or scripts (the full list, and why). Take them from its source.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencenexus-organization-infosec/shutdown-when-done

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

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