What it does
yomiyasu is a "skill", a set of instructions you load into AI tools such as Claude Code, Codex or Cursor. It edits Japanese text written by AI, fixing odd metaphors, unclear sentence subjects and unnecessary decoration like heavy bold text, so the writing is easier to read.
It is designed mainly for practical writing: technical articles, design and specification documents, pull request descriptions and internal reports. It follows seven rules, such as keeping the original meaning, not adding facts that weren't there, and adjusting sentence length and punctuation.
When something in the original can't be understood for sure, it leaves that part as it is and lists it as a question for the writer. Shorter versions, yomiyasu-mini and yomiyasu-pocket, are offered separately for tools that can't load the full skill.
Who it's for
People who write Japanese documents or articles with help from AI and want the result to read naturally. It works inside AI coding assistants and Claude's web app.
Can I use it without coding?
With some setup. You install it into an AI tool with a short command or by uploading a ZIP file to Claude, then ask the AI to use it. New to this? Start here.
Can I run it?
- Cost
- Free, but needs an AI accountThe software is free, but it uses an online AI service (like OpenAI or Anthropic), which usually charges for use.
- Runs on
- Web browser, Mac, Windows, Linux
- Computer
- An ordinary computer is fine
- Privacy
- Sends what you give it to an online service
Try it
- Download the ready-made yomiyasu.zip file from the project's latest release page.
- Upload the ZIP, without unzipping it, to Claude's custom skill settings (or install it into Claude Code, Codex or Cursor using the README's install options).
- Paste your draft and ask the AI: "Make this easier to read with yomiyasu."
Before you download
Plain-AyI is an independent guide: we link to each project's official pages, but we don't host, review or endorse the software, and we can't accept responsibility for how it works on your device. Please download and install at your own discretion.
Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?
Before you install
- Only download from the official GitHub page or the official download page above. Copies with similar names exist for many popular projects.
- Plain-AyI is an independent guide and doesn't host or review the software it lists. Please check each project's official page before installing.
- License (MIT): Very permissive: free to use, change and share, including for business.
- What you type or upload is sent to an online service. Avoid sharing private or sensitive information.
- More on staying safe