🔖 Prompt Vault

A production-ready Chrome Extension (Manifest V3) for capturing, organizing, searching, and exporting prompts across AI chat applications.

Features

• 📥 Capture prompts from ChatGPT, Claude, Gemini, Perplexity, Grok — or manually via popup
• 📂 Folder organization — create, rename, delete folders with drag & drop
• 🏷 Tagging system — color-coded tags with autocomplete
• 🔍 Real-time fuzzy search — across title, body, and tags
• ⭐ Favorites — star your best prompts
• 📤 Export — individual prompts as .md or all as .json backup
• 📥 Import — restore from JSON backup
• 🌙 Dark/light mode — with system preference detection
• 🔐 100% offline — all data stored in chrome.storage.local

Installation

1. Open Chrome and navigate to chrome://extensions/
2. Enable Developer Mode (toggle in top-right)
3. Click Load unpacked
4. Select the prompt-vault/ folder

Usage

Saving prompts manually

Click the extension icon, then hit the + button to create a new prompt.

Saving from AI sites

Visit any supported AI site (ChatGPT, Claude, Gemini, Perplexity, Grok). A 🔖 bookmark icon will appear in the corner. Click it to save the current text from the input field.

Keyboard shortcuts

• Ctrl/Cmd + N — new prompt
• Escape — close modals

Supported Sites

• chatgpt.com
• claude.ai
• gemini.google.com
• perplexity.ai
• grok.com

Export Format

Markdown exports include YAML front matter:

---
title: "Your prompt title"
tags: [coding, analysis]
source: claude.ai
created: 2026-02-22T10:30:00Z
updated: 2026-02-22T10:30:00Z
---

Your prompt body here...

File Structure

prompt-vault/
├── manifest.json          # MV3 manifest
├── popup/
│   ├── index.html         # Main popup UI
│   ├── popup.js           # Popup application logic
│   └── popup.css          # Styles (dark/light theme)
├── content/
│   └── content.js         # Injected UI for AI sites (Shadow DOM)
├── background/
│   └── service-worker.js  # Background message handler
├── lib/
│   ├── storage.js         # chrome.storage.local abstraction
│   ├── export.js          # Import/export utilities
│   └── utils.js           # Shared utilities
└── assets/
    └── icons/             # Extension icons

Privacy

All data is stored locally in your browser using chrome.storage.local. No data is sent to any server.