natural-japanese

natural-japanese is a plugin for Claude Code from coji/natural-japanese. Its manifest loads nothing; the 1 skill it bundles cost 603 tokens per session together, scanned A, original, MIT.

A Japanese-language writing and editing skill for business documents, reports, guides, research notes, slides, blogs, and essays.

In plain words
What is it for?
Use it to draft or revise Japanese meeting notes, internal documents, reports, presentations, articles, and other prose.
Why use it?
It helps make Japanese writing clearer, easier to read, and less machine-like.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit Use it to draft or revise Japanese meeting notes, internal documents, reports, presentations, articles, and other prose.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add coji/natural-japanese/plugin install natural-japanese
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.

Clone the repo
git clone --depth 1 https://github.com/coji/natural-japanese

Made for: Claude Code.

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 natural-japanese

README.md
[![agentmods](https://agentmods.dev/badge/plugins/coji/natural-japanese/natural-japanese/github.svg)](https://agentmods.dev/plugins/coji/natural-japanese/natural-japanese)
Your own site
<a href="https://agentmods.dev/plugins/coji/natural-japanese/natural-japanese"><img src="https://agentmods.dev/badge/plugins/coji/natural-japanese/natural-japanese/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 natural-japanese

Your own site · 80×15
<a href="https://agentmods.dev/plugins/coji/natural-japanese/natural-japanese"><img src="https://agentmods.dev/badge/plugins/coji/natural-japanese/natural-japanese.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill cost 603 tokens a session between them.
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.
Security

Grade A, and why

natural-japanese 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 6d 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.

.claude-plugin/plugin.json · 12 lines

What it actually says

{
  "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・社内ガイド・リサーチメモ・スライド構成などのビジネス文書から note・ブログ・エッセイまで。AI臭さの除去を工程の一部として組み込む。",
  "version": "1.5.0",
  "author": {
    "name": "coji"
  },
  "homepage": "https://github.com/coji/natural-japanese",
  "repository": "https://github.com/coji/natural-japanese",
  "license": "MIT"
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 603 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside plugin.json 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. 6d ago Changed 8d2366233da9
  2. 11d ago First seen · 12 lines scan A b0f491c463a6

Subscribe to this mod's changes

natural-japanese is a plugin published in the GitHub repository coji/natural-japanese (1,018 stars, last pushed 6d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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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