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 michielinksee/bantou --skill tax-classifiergit clone --depth 1 https://github.com/michielinksee/bantouWrote 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/michielinksee/bantou/tax-classifier)<a href="https://agentmods.dev/skills/michielinksee/bantou/tax-classifier"><img src="https://agentmods.dev/badge/skills/michielinksee/bantou/tax-classifier/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/michielinksee/bantou/tax-classifier"><img src="https://agentmods.dev/badge/skills/michielinksee/bantou/tax-classifier.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 | $0.00033 | $0.00764 |
| Opus 5 | $0.00016 | $0.00382 |
| Sonnet 5 | $0.00007 | $0.00153 |
| Haiku 4.5 | $0.00003 | $0.00076 |
Grade A, and why
tax-classifier 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 11d 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 — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Tax Classifier
Classify Japanese business transactions into standard accounting categories (kanjou-kamoku / 勘定科目) using a 3-stage pipeline that minimizes API costs and maximizes accuracy.
When to use
Invoke this skill whenever the user provides a transaction description (e.g. "スタバ 渋谷店 ¥580") and needs:
- A 勘定科目 classification
- A 税区分 (consumption-tax treatment) assignment
- A confidence score
Pipeline overview
Stage 0 — Exclusion check (7 rules)
Before any classification attempt, run check_exclusion to filter out
non-classifiable items. The standard rules exclude:
- Transfer-to-self (振替) entries
- Opening / closing balance lines
- Duplicate reversed entries (赤伝)
- Summary / subtotal rows
- Tax-payment lines handled separately
- Payroll deduction detail lines
- Memo-only entries with zero amount
If an item is excluded, return the exclusion reason without proceeding.
Stage 1 — Memory recall + keyword dictionary (14 categories)
Query recall_memory first. If the exact vendor or pattern has been
corrected before, use the memorized classification immediately.
If no memory hit, match against the 14-category keyword dictionary:
| Category | Examples |
|---|---|
| 会議費 | cafe, meeting room |
| 交際費 | dinner with client, gift |
| 旅費交通費 | train, taxi, hotel |
| 通信費 | phone, internet, postage |
| 消耗品費 | office supplies, toner |
| 地代家賃 | rent, parking |
| 水道光熱費 | electricity, gas, water |
| 支払手数料 | bank fee, service charge |
| 広告宣伝費 | ads, marketing |
| 外注費 | subcontractor, freelancer |
| 福利厚生費 | employee meal, health check |
| 保険料 | insurance premium |
| 租税公課 | stamp duty, property tax |
| 雑費 | miscellaneous (last resort) |
Stage 2 — Claude AI fallback
When keyword matching fails or confidence is below threshold, call
classify_transaction which uses Claude to analyze the description
with full context from the firm's CLAUDE.md configuration.
Consumption tax handling
Always assign a tax treatment. Be careful with the rates:
- 10% — standard rate (標準税率)
- 8% reduced — food/beverage for takeout, newspaper subscriptions (軽減税率)
- Exempt (非課税) — land rent, insurance, interest
- Non-taxable (不課税) — donations, damages, foreign transactions
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.
- 11d ago First seen · 93 lines · 33 tokens per session scan A 1d2eb41e91b3
tax-classifier is a skill published in the GitHub repository michielinksee/bantou (2 stars, last pushed 19d ago), licensed MIT. It adds 33 tokens to every session and 764 once invoked, about $0.0002 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.
Other skills, from other repositories
bank-reconciliation
Match book entries against bank or credit card statements to find discrepancies, missing transactions, and duplicates. Uses exact, near, and batch matching with balance verification. Trigger on "reconcile bank statement", "match transactions", "bank balance doesn't match", "close the books".
monthly-close
Repeatable month-end close checklist for small businesses — lock the period, process outstanding receipts, categorize remaining items, reconcile all accounts, review large transactions, check contractor 1099 thresholds, generate monthly P&L summary. Trigger on "close the month", "month-end close", "monthly…
depreciation-assets
Determine whether to expense or depreciate business assets using the de minimis safe harbor ($2,500), Section 179 ($1,220,000 limit), bonus depreciation (phase-out 2024–2027), or MACRS schedules. Track asset basis, useful life, and accumulated depreciation. Trigger on "depreciate", "Section 179", "bonus depreciation"…
estimated-taxes
Calculate and schedule quarterly estimated tax payments (Form 1040-ES) for self-employed individuals. Covers self-employment tax calculation (15.3%), income tax estimation, safe harbor rules (100%/110% of prior year), payment deadlines, and underpayment penalties. Trigger on "estimated taxes", "quarterly taxes"…
meals-deduction
Rules for deducting business meals at 50%, required documentation (who, what, where, why), entertainment at 0% since TCJA 2018, on-premises meals going to 0% in 2026, and common mistakes. Trigger on "deduct a meal", "business lunch", "client dinner deductible", "meals deduction", "entertainment deduction", "can I…
tax-prep
Organize financial records into tax-ready reports — P&L mapped to Schedule C lines, quarterly breakdowns, 1099 contractor summary, and flagged items requiring special treatment. Does not file taxes or give tax advice. Coordinates with specialized skills for meals, depreciation, home office, vehicle, and 1099 details.…