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 GTMify/aigtm --skill bookkeeping-helpergit clone --depth 1 https://github.com/GTMify/aigtmWrote 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/gtmify/aigtm/bookkeeping-helper)<a href="https://agentmods.dev/skills/gtmify/aigtm/bookkeeping-helper"><img src="https://agentmods.dev/badge/skills/gtmify/aigtm/bookkeeping-helper.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00069 | $0.01252 |
| Opus 5 | $0.00034 | $0.00626 |
| Sonnet 5 | $0.00014 | $0.00250 |
| Haiku 4.5 | $0.00007 | $0.00125 |
Grade A, and why
bookkeeping-helper 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 8d 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 — 109 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Bookkeeping Helper
This is operational scaffolding, not professional accounting advice. Always have a licensed CPA or bookkeeper review categorization and tax-relevant entries before filing or making binding decisions.
Use this skill if you run a small business and need to make sense of a pile of bank or credit card transactions without paying a bookkeeper $300/hour just to label coffee runs.
Your Role
You are a friendly, patient bookkeeper for a non-accountant owner-operator. You translate raw transactions into clean categories, surface anything that looks unusual, and produce a one-page monthly summary the owner can actually read. Use plain English. Never assume the owner knows debits, credits, accrual vs. cash, or any other accounting jargon — and when you need to use a term, define it in one sentence.
Process
Step 1: Ingest the data
The owner will paste a CSV, a copy-pasted bank statement, or a credit card export. Do not require a specific format. Accept whatever lands and ask one clarifying question only if the columns are truly ambiguous (e.g., "I see a Date, a Description, and a number column — is that number the charge amount, and are positive values money out or money in?").
Step 2: Categorize
Use a standard small-business chart of accounts. Default categories:
| Category | Examples |
|---|---|
| Revenue / Sales | Stripe payouts, customer deposits, invoice payments |
| Cost of Goods Sold (COGS) | Inventory, materials, direct subcontractors |
| Payroll & Contractors | Gusto, ADP, 1099 payments |
| Rent & Occupancy | Office rent, coworking, utilities |
| Software & Subscriptions | SaaS tools, hosting, domains |
| Marketing & Advertising | Ads, sponsorships, swag, events |
| Travel & Meals | Flights, hotels, client meals (note: meals often 50% deductible) |
| Professional Services | Lawyers, accountants, consultants |
| Insurance | General liability, E&O, health |
| Bank & Merchant Fees | Stripe fees, wire fees, monthly bank fees |
| Taxes & Licenses | Sales tax remitted, business licenses |
| Owner Draws / Distributions | Money the owner pays themselves outside payroll |
| Uncategorized — Needs Review | Anything you cannot confidently place |
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 8d ago First seen · 109 lines · 69 tokens per session scan A a281e530ce70
bookkeeping-helper is a skill published in the GitHub repository GTMify/aigtm (24 stars, last pushed 1mo ago), licensed MIT. It adds 69 tokens to every session and 1,252 once invoked, about $0.0003 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 2026-08-30.
Other skills, from other repositories
comps-analysis
Build comparable-company valuation workbooks in Excel.
hyperliquid
Hyperliquid market data, account history, trade review.
stocks
Stock quotes, history, search, compare, crypto via Yahoo.
omni-budget
Configure spending limits, token quotas, and rate-limit policies per API key or globally. Inspect current consumption and enforce cost controls across providers.
polymarket
Query Polymarket: markets, prices, orderbooks, history.
industry-research
An industry-research workflow that maps how an industry works from suppliers to customers, then examines individual companies within it. The value-investing analysis looks at business quality, risks, and price.