Prompt Polish for AI Chats (On-Device AI)

Prompt Polish for AI Chats (On-Device AI) is a UserScript on the Customaise marketplace.

Polishes your prompt with on-device AI before you send, on ChatGPT, Claude, and Gemini, using your own reusable instruction library. Free, private, no API key.

Polishes your prompt on ChatGPT, Claude, and Gemini with on-device Gemini Nano (CM_promptAI) before you send it. Type as usual; after a short pause a panel beside the input shows a cleaner version, press Tab to accept or Esc to dismiss. Click the sparkle icon next to the send button to manage a library of named instruction sets (e.g. British casual, Code reviews, Marketing voice) that get stacked into every polish, plus tune debounce, style (grammar / clarity / structure), and code preservation per profile. Everything runs locally: your draft never leaves the machine. Free, private, no API…

Where it runs

What does Prompt Polish for AI Chats (On-Device AI) do?

Polishes your prompt with on-device AI before you send, on ChatGPT, Claude, and Gemini, using your own reusable instruction library. Free, private, no API key.

What sites does Prompt Polish for AI Chats (On-Device AI) work on?

Prompt Polish for AI Chats (On-Device AI) runs on chatgpt.com, claude.ai, gemini.google.com.

Is Prompt Polish for AI Chats (On-Device AI) reviewed by Customaise?

Yes. Every marketplace listing on Customaise is reviewed before going live, including the source code, the @connect domains, and (for AgentScripts) the @webmcp tool surface.

Is Prompt Polish for AI Chats (On-Device AI) free?

Yes. Customaise is free to use; the Power User subscription unlocks higher monthly token limits and the MCP bridge but is not required to install marketplace UserScripts.