Tax Invoice Credit Context logo

Tax Invoice Credit Context

Community
kazukinagata
tax-invoice-credit-context

Background context for invoice-system input tax credit rules (仕入税額控除) in the shinkoku tax filing plugin. Contains eligibility requirements, the 6 permanent exceptions (帳簿のみ保存の恒久特例), transitional measures for purchases from tax-exempt businesses, and storage requirements. This skill is not user-invocable — Claude loads it automatically when responding to input tax credit questions under the invoice system.

Overview

Publisherkazukinagata
Repositoryshinkoku
Skill nametax-invoice-credit-context
Stars
366
Forks
32
Bundled files
1
LicenseMIT
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • 1 bundled files

    Scripts, templates, and references the model can read while it works. Files are read-only and never executed.

  • Open source

    Published by kazukinagata on GitHub. Read the source before you install it.

Installation

Install the Tax Invoice Credit Context AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/kazukinagata/shinkoku/tree/main/skills/tax-invoice-credit-context
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/kazukinagata/shinkoku.git /tmp/shinkoku
mkdir -p .claude/skills
cp -r /tmp/shinkoku/skills/tax-invoice-credit-context .claude/skills/tax-invoice-credit-context
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Tax Invoice Credit Context in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Tax Invoice Credit Context on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Tax Invoice Credit Context is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

インボイス仕入税額控除コンテキスト(Input Tax Credit Context)

このスキルはインボイス制度における仕入税額控除の要件・例外に関するコンテキストを提供する。

仕入税額控除の情報提供

仕入税額控除に関する回答を行う際は、references/input-tax-credit-rules.md を読み込んで以下を実行する:

  1. 原則(適格請求書+帳簿の保存)を確認して案内する
  2. 帳簿のみ保存の恒久特例6類型(公共交通機関・自販機・郵便等)への該当を確認する
  3. 免税事業者からの仕入れに係る経過措置の控除率(80%→70%→50%→30%→0%)を案内する
  4. 課税売上割合に応じた控除方式(全額控除・個別対応方式・一括比例配分方式)を説明する
  5. 保存期間(7年間)と電子取引データ保存の要件を案内する

参照ファイル

ファイル内容
references/input-tax-credit-rules.md仕入税額控除の原則・帳簿記載要件・恒久特例6類型・経過措置・課税売上割合と控除方式

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Tax Invoice Credit Context AI skill do?

Background context for invoice-system input tax credit rules (仕入税額控除) in the shinkoku tax filing plugin. Contains eligibility requirements, the 6 permanent exceptions (帳簿のみ保存の恒久特例), transitional measures for purchases from tax-exempt businesses, and storage requirements. This skill is not user-invocable — Claude loads it automatically when responding to input tax credit questions under the invoice system.

Why use Tax Invoice Credit Context on TypingMind?

Because you install it once and use it with any model. Tax Invoice Credit Context is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Tax Invoice Credit Context in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/kazukinagata/shinkoku/tree/main/skills/tax-invoice-credit-context. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Tax Invoice Credit Context?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Tax Invoice Credit Context?

As many as you like. As long as a model supports skills, you can use Tax Invoice Credit Context with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Tax Invoice Credit Context AI skill free?

Yes. It is published on GitHub by kazukinagata under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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