Line Chief
Browser Extension

Line Chief Copilot
Enhance any prompt without leaving the page

Stop switching tabs. Line Chief Copilot sits inside any AI tool — Midjourney, Suno, ChatGPT, Claude, Runway, Perplexity and more — and rewrites your rough idea into an expert-level prompt in one click.

⬇ Download Extension (v1)

Works on Chrome and Firefox · Free with a Line Chief account

See it in action on Suno

① You type
Weak prompt: beastie boys style american anthem
"beastie boys style american anthem"
② Chief it ⚡
Line Chief enhancing the prompt
Enhancing... (~2 seconds)
③ Expert prompt
Enhanced Suno prompt from Line Chief
Ready to create — no editing needed
Before → After
Line Chief before and after comparison

Installation

🟡 Chrome / Edge / Brave
  1. Download the zip above and unzip it.
  2. Open chrome://extensions
  3. Enable Developer mode (top-right toggle).
  4. Click Load unpacked and select the unzipped folder.
  5. The ⚡ icon appears in your toolbar — pin it for easy access.
🦊 Firefox
  1. Download the zip above and unzip it.
  2. Open about:debugging#/runtime/this-firefox
  3. Click Load Temporary Add-on.
  4. Select the manifest.json inside the unzipped folder.
  5. The ⚡ icon appears — note: re-load after each browser restart until the signed version is published.

Requirements

✅
A free Line Chief account. Sign up once — your prompts and preferences sync across devices.
🔑
Your API token. Find it in your dashboard under Settings → API. Paste it into the extension popup on first run.
🌐
Chrome 110+, Edge 110+, Brave, or Firefox 115+ — any modern Chromium or Firefox-based browser.
Create a free account →

No credit card required. Free tier included.