ASIN Analyzer – Amazon SP-API Dashboard

ASIN Analyzer is an end-to-end dashboard built on Amazon Selling Partner API (SP-API) that provides deep visibility into a product using its ASIN.

It fetches catalog metadata, images, dimensions, sales ranks, offers, buy box status, and competitive pricing, and visualizes everything in a clean, interactive UI.
The tool is designed for seller analysis, competition research, and internal tooling, not scraping.

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🚀 Features

📦 Catalog Intelligence

• Product title, brand, manufacturer, model, color, style
• Bullet points and full attribute explorer
• Product type & browse node classification
• High-resolution product images (main + gallery)

📐 Dimensions & Weight

• Item & package dimensions
• Metric (cm / kg) and imperial (inch / lbs)
• Weight capacity and unit count (when available)

📈 Sales Rank (BSR)

• Category-level and display-group rankings
• Ranks sourced from:
  • Catalog API
  • Offers summary
  • Competitive pricing API

💰 Pricing & Offers

• Buy Box price
• Lowest available price
• Shipping cost & availability
• Prime & FBA status
• Seller feedback ratings
• Buy Box winner detection

🧠 Competitive Intelligence

• Competitive pricing per ASIN
• Offer listing counts by condition
• Competitor vs requester pricing

🧩 Advanced Tools

• Searchable attribute explorer (accordion)
• Raw JSON viewer (copyable)
• Defensive rendering (handles missing fields safely)

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🛠 Tech Stack

Backend

• Node.js
• Express
• amazon-sp-api
• dotenv

Frontend

• Vanilla JavaScript
• HTML5
• Modern CSS (responsive, no frameworks)

API

• Amazon Selling Partner API (SP-API)
  • Catalog Items (2022-04-01)
  • Product Pricing
  • Competitive Pricing

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📂 Project Structure

asin-analyzer/ ├── server.js ├── package.json ├── .env └── public/ ├── index.html ├── styles.css └── app.js

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⚙️ Setup & Installation

1️⃣ Clone the repository

git clone https://github.com/your-username/asin-analyzer.git
cd asin-analyzer
2️⃣ Install dependencies
npm install
3️⃣ Configure environment variables
Create a .env file in the root directory:

SP_REFRESH_TOKEN=your_refresh_token
SP_CLIENT_ID=your_lwa_client_id
SP_CLIENT_SECRET=your_lwa_client_secret
PORT=3000
⚠️ Never expose these credentials in frontend code

4️⃣ Run the app
npm run dev
Open in browser:
http://localhost:3000

🔐 Security Notes
SP-API credentials are server-only
No secrets are exposed to the browser
This project follows Amazon’s intended API usage (no scraping)

📌 Limitations (By Design)
Customer review ratings are not available via SP-API
Seller count is derived from offer summaries (Amazon does not expose an explicit seller list)
Data availability varies by marketplace & category

🎯 Use Cases
Seller product research
Buy Box & competition analysis
Internal seller tools
SP-API learning & experimentation
Dashboard / system design portfolio project

📄 License
MIT License

🙌 Disclaimer
This project is not affiliated with Amazon.
Amazon, ASIN, and SP-API are trademarks of Amazon.com, Inc.

Built strictly for educational and internal analysis purposes.