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 vehicle-expensesgit 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/vehicle-expenses)<a href="https://agentmods.dev/skills/receiptor-ai/bookkeeping-skills/vehicle-expenses"><img src="https://agentmods.dev/badge/skills/receiptor-ai/bookkeeping-skills/vehicle-expenses/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/vehicle-expenses"><img src="https://agentmods.dev/badge/skills/receiptor-ai/bookkeeping-skills/vehicle-expenses.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 | $0.00073 | $0.02109 |
| Opus 5 | $0.00036 | $0.01055 |
| Sonnet 5 | $0.00015 | $0.00422 |
| Haiku 4.5 | $0.00007 | $0.00211 |
Grade A, and why
vehicle-expenses 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 12d 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 — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Vehicle Expense Deduction
Choose and apply the right method for deducting business vehicle expenses: standard mileage rate or actual expenses.
Two methods — pick one per vehicle
Standard mileage rate
Multiply your business miles by the IRS standard rate. Simple.
2024 rate: 67 cents per mile (this changes annually — check IRS.gov for the current year).
What the rate includes: gas, oil, repairs, tires, insurance, registration, depreciation. You do NOT deduct these separately when using the standard mileage rate — they're baked into the 67¢.
What you CAN add on top: parking fees and tolls for business trips (deducted on Schedule C Line 24a Travel), and interest on a car loan (Line 16b).
When you can use it:
- You must use it in the first year the vehicle is available for business use. If you don't elect it in year 1, you're locked into actual expenses for that vehicle.
- You must own or lease the vehicle (not available for fleet vehicles of 5+ cars)
- You can't have claimed Section 179 or bonus depreciation on the vehicle
- You can't have used MACRS depreciation in a prior year (unless you switch from standard mileage, which then limits you to straight-line)
Actual expense method
Track every dollar spent on the vehicle, then multiply by your business-use percentage.
Deductible actual expenses:
- Gas and oil
- Repairs and maintenance
- Tires
- Insurance
- Registration and license fees
- Lease payments (if leasing)
- Depreciation (if you own — subject to luxury auto limits)
- Garage rent
- Car washes (yes, really)
Business-use percentage: Total business miles ÷ total miles driven during the year. If you drove 15,000 miles total and 10,000 were for business, your business-use % is 66.7%. Apply this to all actual expenses.
The method lock-in rule
This is the most important rule and the one most people get wrong:
| First-year choice | Can switch to standard mileage later? | Can switch to actual later? |
|---|---|---|
| Standard mileage | N/A | Yes, but depreciation limited to straight-line |
| Actual expenses | No — locked out of standard mileage for this vehicle permanently | N/A |
| Section 179 or bonus depreciation claimed | No — locked out permanently | N/A |
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.
- 12d ago First seen · 171 lines · 73 tokens per session scan A 6997c7dfc42f
vehicle-expenses is a skill published in the GitHub repository Receiptor-AI/bookkeeping-skills (4 stars, last pushed 3mo ago), licensed MIT. It adds 73 tokens to every session and 2,109 once invoked, about $0.0004 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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