What languages does Kousei support?

Kousei provides full mechanical and AI-powered proofreading for Japanese text, and specialized structural AI review for English text.

Does Kousei automatically overwrite my files?

For local files, it applies fixes directly. For GitHub Issues and PRs, it displays a diff of the proposed changes and waits for your confirmation before updating.

How does Kousei detect if text is Japanese or English?

It uses a character threshold: if the text contains 50 or more hiragana, katakana, or kanji characters, it triggers the full Japanese proofreading suite.

Can I use Kousei directly on GitHub Pull Requests?

Yes, by passing a PR number (e.g., #pr123), Kousei will fetch the PR body, run fixes, and prompt you to update it using the GitHub CLI.

Do I need to have textlint installed manually?

The skill runs textlint via Bun ('bun x textlint'). You should have Bun installed and a .textlintrc.json configuration file in your ~/.claude/textlint directory.

Kousei Japanese Text Proofreader

Name: Kousei Japanese Text Proofreader
Author: thkt

bythkt

•

Content Management

Automatically proofreads, fixes, and structurally optimizes Japanese and English text using textlint and AI-driven quality checks.

Kousei is a specialized Claude Code skill designed to elevate the quality of Japanese and English writing by combining mechanical linting with advanced AI structural analysis. It integrates seamlessly with textlint to auto-fix grammatical errors and utilizes a sophisticated structural checklist to ensure content is concise, action-oriented, and free from common AI-generated linguistic patterns. Whether you are editing local Markdown files, GitHub Issues, or Pull Requests, Kousei streamlines the proofreading workflow, providing instant diffs and intelligent feedback to reduce reader cognitive load and improve professional communication.

Key Features

01Structural quality review to eliminate redundant content and improve clarity.

028 GitHub stars

03Direct integration with GitHub Issues and Pull Requests via the gh CLI.

04Automated Japanese text correction using textlint with auto-fix support.

05Anti-AI-pattern detection specifically tailored for natural Japanese prose.

06Smart target resolution for local Markdown files based on recent git activity.

Use Cases

01Polishing GitHub Issue descriptions and PR bodies before submission for better team clarity.

02Automated linting and structural review of Markdown files within a development repository.

03Refining technical documentation to remove repetitive AI-style Japanese phrasing and 'work-slop'.

Key Features

01Structural quality review to eliminate redundant content and improve clarity.

028 GitHub stars

03Direct integration with GitHub Issues and Pull Requests via the gh CLI.

04Automated Japanese text correction using textlint with auto-fix support.

05Anti-AI-pattern detection specifically tailored for natural Japanese prose.

06Smart target resolution for local Markdown files based on recent git activity.

Use Cases

01Polishing GitHub Issue descriptions and PR bodies before submission for better team clarity.

02Automated linting and structural review of Markdown files within a development repository.

03Refining technical documentation to remove repetitive AI-style Japanese phrasing and 'work-slop'.