Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add xiaolai/mac-it-guy-pro/plugin install mac-it-guy-proWrote 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/commands/xiaolai/mac-it-guy-pro/backup)<a href="https://agentmods.dev/commands/xiaolai/mac-it-guy-pro/backup"><img src="https://agentmods.dev/badge/commands/xiaolai/mac-it-guy-pro/backup/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/commands/xiaolai/mac-it-guy-pro/backup"><img src="https://agentmods.dev/badge/commands/xiaolai/mac-it-guy-pro/backup.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 | $0.00022 | $0.00778 |
| Opus 5.5 | $0.00009 | $0.00311 |
| Sonnet 5.5 | $0.00004 | $0.00156 |
| Haiku 4.5 | $0.00002 | $0.00078 |
Grade A, and why
backup scanned grade A with 0 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 1mo 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Backup — the most important visit
Read ${CLAUDE_PLUGIN_ROOT}/skills/it-core/SKILL.md first — the safety contract is binding, especially: admin work handed to the user, never touch existing backups (the guard hook also enforces tmutil delete/disable as out of bounds). Read ~/ITGuy/machine.md if it exists. If uname is not Darwin, say this version supports Mac only and stop.
Step 1: Audit what exists
Dispatch the mac-it-guy-pro:diagnostician agent (via Task) for the backup area, plus these direct read-only checks:
- Time Machine: destination configured? latest backup date? (distinguish "no backup" from "backup disk not connected" — recipes in
macos-recipes) - iCloud Drive:
ls ~/Library/Mobile\ Documents/com~apple~CloudDocs 2>/dev/null— present and syncing Desktop/Documents, or not - External disks currently mounted:
ls /Volumes
Step 2: Map coverage against what matters
Build the coverage table from the user's actual key folders (profile Owner/Conventions first; otherwise Desktop, Documents, Pictures, plus anything they name):
| What | Where it lives | Covered by | Verdict |
|---|---|---|---|
| Photos | ~/Pictures | nothing | 🔴 would be lost |
Top line of the report answers the only question that matters, in one sentence: "If this Mac died tonight, you would lose: …"
Step 3: Propose a strategy
Explain 3-2-1 in one plain sentence (three copies, two kinds of storage, one away from home) — then propose the smallest setup that closes the 🔴 rows, as an options table (Option | Cost | Effort | What it protects). Recommend exactly one. Do not recommend buying anything without naming a cheaper alternative in the same table.
Step 4: Set it up — user does the clicking
Time Machine setup, disk formatting choices, and iCloud toggles live in System Settings and are the user's hands, not yours: give a numbered click-path for each step, wait for their "done", then verify from the terminal (e.g. tmutil destinationinfo now shows the disk; first backup running). Never format a disk yourself — if the chosen disk needs erasing, that is a Disk Utility walkthrough with an explicit "this erases everything currently on that disk" warning.
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.
- 1mo ago First seen · 49 lines · 22 tokens per session scan A cd865853dfae
backup is a command published in the GitHub repository xiaolai/mac-it-guy-pro (6 stars, last pushed 16d ago), licensed MIT. It adds 22 tokens to every session and 778 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other commands, from other repositories
brand-setup
Create or update a brand profile: colors, fonts, logo, voice, platforms. "set up a new client brand".
new-month
Start a new month for a brand: folder and settings; a calendar to load -> parse-calendar; ideas -> ideate-month. "start a new month for this brand".
screens
Structures product UX screen design — inventory, flow, states, and reusable briefs for external design tools — without generating pixels or UI code.
review
Cold re-quiz on code that already shipped — your own session commits, not the change in front of you.
qa
Smoke or browser-walk a running app. Report only. Do not implement. Do not merge.
reset
Guided teardown of an organic-os site - what gets deregistered automatically, what you must delete or revoke yourself, and why.