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natural-japanese

A skill for writing and editing business Japanese: clear structure, readability and removing machine-text tells

Skill

Medium risk

We rate an entry medium when the tool runs code, makes network calls or reads project files. Check what exactly it does before installing.

Why this level

  • Reads and rewrites document files
  • Runs check scripts through uv
All reasons and checks

coji/natural-japaneseAuthor:coji

Install

In your terminal, with SkillFoxx CLI

npx skillfoxx add skills/natural-japanese

Detects the agents on your machine, checks the risk and pins the version.

Other ways to install

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a claude-code -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .claude/skills
cp -R "$tmp/skills/natural-japanese" .claude/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a cursor -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .agents/skills
cp -R "$tmp/skills/natural-japanese" .agents/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a github-copilot -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .github/skills
cp -R "$tmp/skills/natural-japanese" .github/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a codex -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .agents/skills
cp -R "$tmp/skills/natural-japanese" .agents/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a gemini-cli -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .agents/skills
cp -R "$tmp/skills/natural-japanese" .agents/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .devin/skills
cp -R "$tmp/skills/natural-japanese" .devin/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Formerly Windsurf.

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a cline -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .cline/skills
cp -R "$tmp/skills/natural-japanese" .cline/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a roo -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .roo/skills
cp -R "$tmp/skills/natural-japanese" .roo/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

A fork of Roo Code, same .roo folders.

Run in a terminal in the project folder

npx skills add coji/natural-japanese --skill natural-japanese -a opencode -y

The skills tool installs the current version from the repository. Add the -g flag to use the skill in every project.

Without third-party tools, from commit 9a78a42
tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .agents/skills
cp -R "$tmp/skills/natural-japanese" .agents/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .agents/skills
cp -R "$tmp/skills/natural-japanese" .agents/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

Run in a terminal in the project folder

tmp=$(mktemp -d)
git clone --filter=blob:none --no-checkout https://github.com/coji/natural-japanese.git "$tmp"
git -C "$tmp" sparse-checkout set --no-cone /skills/natural-japanese/
git -C "$tmp" checkout 9a78a42964096da509b8f3e011f0085a5f080151
mkdir -p .agents/skills
cp -R "$tmp/skills/natural-japanese" .agents/skills/natural-japanese

Commands for macOS and Linux, on Windows run them in Git Bash.

You will need: Node.js

Checked against the repository on Sep 25, 2026, commit 9a78a42.

Text for your agent

Install the skill with npx skills add coji/natural-japanese. For Cursor, ChatGPT and Codex use npx openskills install coji/natural-japanese followed by npx openskills sync.

Other ways from the author
npx skills add coji/natural-japanese

The main way to install the skill.

This is third-party code. Review the repository files before installing.

What it does

The skill helps the agent write and edit work documents in Japanese: meeting minutes, reports, internal guides, notes, emails and plans. It builds text conclusion-first and watches readability: word order, sentence length, one idea per sentence, punctuation placement. It also removes machine-translation and AI-style tells, with a detector flagging suspicious spots mechanically while the agent decides in context whether to fix or keep them. It has quick and full modes plus a scoring mode that does not rewrite.

Who it is for. For anyone who writes and edits business documents in Japanese.

Good fit when

  • You need to write or polish a work document in Japanese
  • You need to strip machine-translation and AI-style tells
  • You need to score readability without rewriting

Not a fit when

  • The text is not in Japanese
  • You only need Markdown formatting rather than style work

Example request

Polish this Japanese meeting minutes and remove the machine-text feel

Limitations

The skill targets Japanese and does not fit other languages. Some check scripts require uv installed. The full mode takes noticeably longer on long documents.

How to disable. Remove the natural-japanese skill from the agent's skills directory or disable the plugin via /plugin.

Security check

  • Reads and rewrites document files
  • Runs check scripts through uv

README in short

The README describes a business-Japanese skill installed via npx skills add, or via openskills for Cursor, ChatGPT and Codex, with a /plugin option too. It rests on two principles: the detector flags suspicious spots mechanically while the agent edits, and prevention while writing beats cleanup afterward. The skill runs in quick and full modes, and check scripts run through uv. MIT licensed.

SKILL.md

---
name: natural-japanese
description: 仕事の日本語文書を読みやすくわかりやすく書く・直すためのスキル。議事録、調査レポート・分析レポート、社内ガイド・マニュアル、リサーチメモ・企画書・提案書・報告書・メール、スライド構成案といったビジネス文書の作成・校正に使用する。AI臭さの除去、読みにくい・わかりにくい文章の改善、note記事やブログ記事の新規執筆、AI臭さの診断・採点にも対応する。
license: MIT
argument-hint: "[write|score] [quick|full|exp] [対象ファイルや依頼内容]"
---

# natural-japanese

仕事の日本語を、読みやすくわかりやすく書くためのスキル。

FAQ

How do quick and full modes differ?

Quick handles everyday documents in place; full adds parallel structure and readability reviews for high-stakes text.

Can it only score text?

Yes, the score mode gives diagnostics without rewriting.

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