furusato-nozei SKILL.md skillA
furusato-nozei from tahodev/kurashi-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tahodev/kurashi-skill/furusato-nozei@git:20260925.733b11cPins git:20260925.733b11c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tahodev/kurashi-skill
- Path
furusato-nozei/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260925.733b11c, committed Sep 25, 2026
- First version recorded
- Sep 8, 2026
- Size
- 8,938 bytes
- Repository stars
- 4
- License
- MIT
給与収入や課税所得からふるさと納税の寄附上限額(自己負担2,000円の目安)を計算する。ふるさと納税、寄附上限、寄附金控除、ワンストップ特例の相談に対応。API不要の純粋計算。確定申告書の作成や個別の税務判断は対象外。.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# furusato-nozei ふるさと納税で「自己負担2,000円で済む寄附額の上限」の目安を計算するスキル。外部APIは使わず、公開されている計算式だけで求める。 ## 上限額の計算式 ``` 上限額 = 個人住民税所得割額 × 20% ÷ (90% − 所得税率 × 1.021) + 2,000円 ``` この式は総務省「ふるさと納税のしくみ - 税金の控除について」の控除計算(住民税の特例分の上限 = 住民税所得割額の20%)から導かれるもの。 根拠: https://www.soumu.go.jp/main_sosiki/jichi_zeisei/czaisei/czaisei_seido/furusato/mechanism/deduction.html (2026年9月時点で確認) - **個人住民税所得割額**: 課税所得 × 10% で概算できる(標準税率の場合)。正確な値は住民税の決定通知書に載っている。 - **所得税率**: 課税所得(所得税ベース)に応じて下表。 下表は **2026年9月時点の現行値** (令和7年4月1日現在の法令に基づく国税庁の公表値。平成27年分以降から変更なし)。 根拠: 国税庁 No.2260「所得税の税率」 https://www.nta.go.jp/taxes/shiraberu/taxanswer/shotoku/2260.htm | 課税所得(所得税) | 所得税率 | | --- | --- | | 195万円以下 | 5% | | 195万円超 330万円以下 | 10% | | 330万円超 695万円以下 | 20% | | 695万円超 900万円以下 | 23% | | 900万円超 1,800万円以下 | 33% | | 1,800万円超 4,000万円以下 | 40% | | 4,000万円超 | 45% | 1.021 は復興特別所得税分。 ## 給与収入から課税所得を概算する 利用者が課税所得を知らない場合は、給与収入から概算する。 1. **給与所得控除** を引く(下表は **2026年9月時点の現行値** = 令和7年分以降。令和7年度税制改正で最低保障額が55万円→65万円に引き上げられた): - 190万円以下: 65万円 - 190万円超 360万円以下: 収入 × 30% + 8万円 - 360万円超 660万円以下: 収入 × 20% + 44万円 - 660万円超 850万円以下: 収入 × 10% + 110万円 - 850万円超: 195万円(上限) …
Read the whole file at its exact version.
How to install
mdr add tahodev/kurashi-skill/furusato-nozei@sha256:b5ca0ab16de4a79aThe line at the top of this page pins the label git:20260925.733b11c, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_25nxhm2ohau4mrvk)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Sep 8, 2026 and Sep 25, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260925.733b11c latest | 2026-09-25 | 733b11c | 8,938 B | A | view · diff |
| git:20260920.d078717 | 2026-09-20 | d078717 | 8,767 B | A | view · diff |
| git:20260911.008d34a | 2026-09-11 | 008d34a | 8,663 B | A | view · diff |
| git:20260908.1615c9a | 2026-09-08 | 1615c9a | 7,868 B | A | view · diff |
| git:20260908.edcdd0c | 2026-09-08 | edcdd0c | 7,721 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8938 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
tahodev/kurashi-skill · 4 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_25nxhm2ohau4mrvk GET https://markdownregistry.com/api/v1/resolve?ref=tahodev/kurashi-skill/furusato-nozei GET https://markdownregistry.com/api/v1/blob/b5ca0ab16de4a79ada4b5e1a3e79e3a623314f1ef19321b47bb8777c494fdf73
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.