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 skills add Receiptor-AI/bookkeeping-skills --skill home-officegit clone --depth 1 https://github.com/Receiptor-AI/bookkeeping-skillsWrote 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/receiptor-ai/bookkeeping-skills/home-office)<a href="https://agentmods.dev/skills/receiptor-ai/bookkeeping-skills/home-office"><img src="https://agentmods.dev/badge/skills/receiptor-ai/bookkeeping-skills/home-office/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/receiptor-ai/bookkeeping-skills/home-office"><img src="https://agentmods.dev/badge/skills/receiptor-ai/bookkeeping-skills/home-office.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 | $0.00080 | $0.02124 |
| Opus 5.5 | $0.00032 | $0.00850 |
| Sonnet 5.5 | $0.00016 | $0.00425 |
| Haiku 4.5 | $0.00008 | $0.00212 |
Grade A, and why
home-office 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 — 146 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Home Office Deduction
Calculate the business use of home deduction for self-employed individuals who work from home. This flows to Schedule C Line 30 via Form 8829.
Do you qualify?
Two requirements must both be met:
Regular use — You use the space for business on a regular basis. Occasional or incidental use doesn't count. Working from home most days of the week qualifies. Working from home once a month does not.
Exclusive use — The space is used exclusively for business. This is the requirement most people fail. A spare bedroom used only as your office qualifies. A kitchen table where you also eat dinner does not. A room that doubles as a guest bedroom does not. A dedicated desk in the corner of a room can qualify if that area is used for nothing else — but the IRS interprets this strictly.
Exception to exclusive use: If you use part of your home to store inventory or product samples, and your home is the sole fixed location of your business, the exclusive use test doesn't apply to the storage area. Daycare facilities also have a partial exception.
Additional requirement for employees: If you're a W-2 employee working from home, the home office deduction is NOT available on your federal return since TCJA 2018 (some states still allow it). This deduction is only for self-employed individuals (Schedule C filers) and certain statutory employees.
Method 1: Simplified method
The easy option. No tracking of actual home expenses required.
Calculation: $5 × square footage of your dedicated home office space, up to 300 square feet maximum.
Maximum deduction: $5 × 300 = $1,500 per year.
Advantages: No need to calculate actual expenses, no depreciation (which means no depreciation recapture if you sell your home later), no Form 8829 required, easy to calculate.
Disadvantages: The $1,500 cap leaves money on the table for people with high mortgage/rent or large offices. You can't carry forward any unused portion. You can still deduct mortgage interest and property taxes on Schedule A (they're not "used up" by the simplified method).
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 · 146 lines · 80 tokens per session scan A 04ad40027a30
home-office is a skill published in the GitHub repository Receiptor-AI/bookkeeping-skills (8 stars, last pushed 5d ago), licensed MIT. It adds 80 tokens to every session and 2,124 once invoked, about $0.0003 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.
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