CLClean Language

Simple installation

Pick the AI you use and follow the buttons.

You do not need a command line, a developer account, or knowledge of GitHub. These instructions cover ChatGPT, Claude, Gemini, and other AI systems.

Claude setupDownload, upload, and enable the Skill ChatGPT instructionsSet up through ChatGPT Skills Gemini instructionsCreate a reusable Clean Language Gem Other AI systemsUse the portable instruction file View source on GitHubReview every rule and release

Claude website or Claude Desktop

This is the preferred Claude method. It installs the complete Skill so Claude can use the canonical instructions and reference files across conversations. The website cannot install a Skill directly into your Claude account.

  1. Click Download Clean Language for Claude.
  2. Your browser will save a file named clean-language.zip. Do not unzip it.
  3. Open Claude in a desktop browser and sign in.
  4. Open Settings, then Capabilities.
  5. Turn on Code execution and file creation if Claude shows that option and it is currently off.
  6. Open Customize, then Skills.
  7. Click the + button.
  8. Click Create skill, then Upload a skill.
  9. Select the downloaded clean-language.zip file.
  10. Turn Clean Language on.

Test it in a new chat by typing: Apply Clean Language to this draft: [paste your text]

Team or Enterprise: your organization owner may need to enable Skills and code execution. An owner can upload the Skill once for the organization instead of requiring each person to install it.

The release also includes a SHA-256 checksum. The Skill contains prose instructions, metadata, and reference material. It contains no executable scripts, software dependencies, or external network instructions.

Fallback: use a Claude Project instead
  1. Open the Clean Language instructions on GitHub and save the file.
  2. In Claude, click Projects, then New Project.
  3. Name it Clean Language.
  4. Under Project knowledge, click + and upload the saved file.
  5. Set the project instructions to: Use the Clean Language instructions in project knowledge for every response unless I explicitly tell you not to.

ChatGPT

Use this method when your ChatGPT account shows Plugins and Skills. Your workspace administrator may need to enable personal Skills.

  1. Open the Clean Language instructions file on GitHub and save it as clean-language-instructions.txt.
  2. Open ChatGPT.
  3. In the left menu, click Plugins.
  4. At the top of the Plugin Directory, click Skills.
  5. Click Create.
  6. Click Create with chat.
  7. Type: Create a skill named Clean Language using the instructions in the file I am about to upload.
  8. Attach clean-language-instructions.txt and send the message.
  9. When ChatGPT shows the completed Skill, click Install.

Test it by starting a new chat and typing: Apply Clean Language to this message: [paste your text]

Do you not see Plugins or Skills? Attach the instructions file to a normal chat and say: Follow these writing rules for this conversation.

Gemini website or Gemini app

The easiest reusable method is a custom Gem. Create it once on the Gemini website, then use it from the website, mobile app, or supported Google Workspace side panel.

  1. Open the Clean Language instructions file on GitHub and save it as clean-language-instructions.txt.
  2. On a computer, open gemini.google.com.
  3. Open the menu on the left.
  4. Click Gems. If you do not see it, click Settings and help, then Gems.
  5. Click New Gem.
  6. Name it Clean Language.
  7. In the instructions box, type: Follow the Clean Language instructions in the attached knowledge file for every response.
  8. Scroll to Knowledge.
  9. Click Add files, then Upload files.
  10. Select clean-language-instructions.txt.
  11. Click Save.

To use it later, open Gemini, click Gems, then click Clean Language.

Mobile note: create and edit the Gem on the Gemini website. After saving it, the Gem appears in the Gemini mobile app.

Other AI systems

Clean Language also works with Microsoft Copilot, local models, API-based assistants, and other systems that accept custom instructions, system prompts, reusable knowledge, or uploaded files.

  1. Open the portable Clean Language instructions file.
  2. Save the file or copy its contents.
  3. Add it to your AI tool as custom instructions, project knowledge, a system prompt, or an attached reference file.
  4. Tell the AI: Use the Clean Language instructions for every response unless I explicitly tell you not to.

How to use Clean Language

You can paste rough notes or finished text. Use one of these requests:

Rewrite this using Clean Language:
[paste text]
Proofread this using Clean Language.
Fix mistakes but do not change my tone:
[paste text]
Audit this for robotic AI language,
filler, contrast framing, and dash overuse.
Do not rewrite it:
[paste text]
Write this with no em dashes or en dashes:
[paste notes]

For technical users

Developers can install the full Agent Skill from the GitHub repository for ChatGPT, Claude Code, Gemini CLI, and compatible Agent Skills clients.