___ _   _  _____  ___  _  _  _____  ___   ___   _  _     ___ _   _  ___
   | __|\ \/ /|_   _|| __|| \| ||_   _||_ _| / _ \ | \| |   | __|\ \/ /| _ \
   | _|  >  <   | |  | _| | .` |  | |   | | | (_) || .` |   | _|  >  < |  _/
   |___|/_/\_\  |_|  |___||_|\_|  |_|  |___| \___/ |_|\_|   |___|/_/\_\|_|

   _    ___  _____
  /_\  | _ \|_   _|
 / _ \ |   /  | |
/_/ \_\|_|_\  |_|

Extention Expart — Chrome Web Store Listing & Branding Expert

A senior product manager and branding compliance officer in your command line, automated by the Gemini CLI agent.

🔗 View Live Documentation & CLI Simulator

Extention Expart is a highly specialized local skill package designed for the Gemini CLI agent framework. It automates the generation of compliant, high-performing Chrome Web Store listing metadata (titles, summaries, and descriptions), audits manifest permissions, and creates graphical layout specifications according to Google's strict guidelines.

🚀 Terminal Installation

Deploy the extension package to your active workspace using standard NPM or manual local linking commands:

Method A: Install via NPM (Recommended)

You can now install the published package directly from the public registry globally:

npm i -g extention-expart

Method B: Local Repository Development Installation

Clone the repository locally and install the local folder as a Gemini extension:

# Clone the repository locally
git clone https://github.com/sujoymoulick/chrome-dev-skill.git

# Install the local folder directly as an extension
gemini extensions install .

🛠️ Local Terminal Testing Workflow

To verify that the newly installed skill works correctly in your project workspace before preparing standard store listings:

Option 1: Interactive Agent Console

Start the interactive gemini console shell:

gemini

Once inside the interactive agent chat console, trigger the reload and then run the skill:

/skills reload
Help me prepare my Chrome Web Store listing for my project.

Option 2: Project-Wide Execution (Recommended)

You can run the skill across your entire project directly from your normal macOS terminal (Zsh/Bash) without entering an interactive session. This is the fastest way to get a full audit:

gemini run "Help me prepare my Chrome Web Store listing for this project."

📋 The Compliance Database & Audits

When evaluated, Extention Expart scans your workspace and cross-references your current configurations against five core checklists:

1. Trademark Safety (No Google prefixes)

• Violation: Starting listing titles with "Google" or "Chrome" (e.g. "Google Chrome Session Manager" leads to instant store rejection).
• Remediation: Generates compliant naming structures using compatible suffixes (e.g. "Session Manager for Google Chrome™").

2. Graphical Asset Boundaries

• Icon Sizing: Audits for a clean 128x128 PNG image featuring a 96x96 main artwork and 16px transparent padding per side to prevent visual clipping.
• Promo Banners: Creates specifications for the Small Promo Tile (440x280) (strictly required) and Marquee (1400x560) with zero text overlays.

3. SEO Listing Polish

• Summary: Crafts high-conversion hooks strictly under 132 characters (no generic terms or superlatives).
• Description: Formats a clean overview paragraph followed by a short feature checklist.

4. Manifest V3 & Performance checks

• Audits for Manifest V3 migration parameters.
• Scans files for rendering bottlenecks (e.g., blocks standard unload listeners in background scripts to ensure BFCache optimization).

5. Review Appeals flow

• Actionable procedures to deal with rejection warnings (7-30 days windows), immediate takedowns (404 page status), and the appeals portal routing details.

📂 Reference Guidelines Directory

Developers can inspect the official documentation logs and reference files directly in the skill directory:

• SKILL.md — The core skill prompt workflow and agent tips.
• listing-guidelines.md — Exact text length limits and visual dimensions.
• review-and-appeals.md — Takedown scopes, malware rules, and appeal forms.
• updates-and-rollbacks.md — Multi-stage rollouts, emergency reverts, and upgrades.
• api-setup.md — Publisher API keys and deployment parameters.

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