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 commands/xiaolai/mac-it-guy-pro/backupgit clone --depth 1 https://github.com/xiaolai/mac-it-guy-proWhat 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 | $0.00022 | $0.00778 |
| Opus 5 | $0.00011 | $0.00389 |
| Sonnet 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 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.
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.
- 2d 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 (5 stars, last pushed 1mo ago), licensed MIT. It adds 22 tokens to every session and 778 once invoked, about $0.0001 per session on Opus 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.
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