tax-legal-context

tax-legal-context is a skill for Claude Code from kazukinagata/shinkoku. It costs 71 tokens per session (326 once invoked), scanned A, original, MIT.

Background legal and regulatory guidance for the shinkoku tax-filing plugin. It explains the limits of its tax information and the disclaimer required for tax-related answers in Japan.

In plain words
What is it for?
Use it automatically when generating tax-related answers with shinkoku, especially when a disclaimer or additional caution is needed.
Why use it?
It helps keep tax answers within the tool's allowed scope and makes clear that they are not personal tax representation or professional tax-agent services.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Part of the shinkoku plugin — 24 skills shipped together

Good fit Use it automatically when generating tax-related answers with shinkoku, especially when a disclaimer or additional caution is needed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kazukinagata/shinkoku/tax-legal-context
Install

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.

Any agent
npx skills add kazukinagata/shinkoku --skill tax-legal-context
Clone the repo
git clone --depth 1 https://github.com/kazukinagata/shinkoku

Made for: Claude Code.

Or install shinkoku, the plugin that ships this one along with the rest of its 24 skills.

Wrote 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.

agentmods badge for tax-legal-context

README.md
[![agentmods](https://agentmods.dev/badge/skills/kazukinagata/shinkoku/tax-legal-context/github.svg)](https://agentmods.dev/skills/kazukinagata/shinkoku/tax-legal-context)
Your own site
<a href="https://agentmods.dev/skills/kazukinagata/shinkoku/tax-legal-context"><img src="https://agentmods.dev/badge/skills/kazukinagata/shinkoku/tax-legal-context/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.

agentmods 80×15 button for tax-legal-context

Your own site · 80×15
<a href="https://agentmods.dev/skills/kazukinagata/shinkoku/tax-legal-context"><img src="https://agentmods.dev/badge/skills/kazukinagata/shinkoku/tax-legal-context.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 71 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 326 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00071 $0.00326
Opus 5 $0.00036 $0.00163
Sonnet 5 $0.00014 $0.00065
Haiku 4.5 $0.00007 $0.00033

Measured 12d ago against content hash 3f95d3f85ac9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

tax-legal-context 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.

skills/tax-legal-context/SKILL.md · 29 lines

What it actually says

このスキルは shinkoku の税務関連回答における法的・免責コンテキストを提供する。

免責事項の提示

免責事項が必要な回答を行う際は、references/disclaimer.md を読み込んで以下を実行する:

  1. references/disclaimer.md の「標準免責文」を回答末尾に付記する
  2. 免責を強調すべきケース(グレーゾーン・高額案件等)に該当する場合は追加注意喚起を行う
  3. 税理士法第52条の観点から、個別具体的な税務代理行為に該当しないよう留意する

参照ファイル

ファイル 内容
references/disclaimer.md 標準免責文・税理士法との関係・ツール制限事項・情報の正確性
Files

What ships with it

1 file 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.

Changes

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.

  1. 12d ago First seen · 29 lines · 71 tokens per session scan A 3f95d3f85ac9

Subscribe to this mod's changes

tax-legal-context is a skill published in the GitHub repository kazukinagata/shinkoku (359 stars, last pushed 3d ago), licensed MIT. It adds 71 tokens to every session and 326 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 2026-08-30.

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