Claude AI Built My Amazon Seller Chrome Extension Live
I used Claude AI to build a completely free Amazon seller Chrome extension from scratch — live on stream. This tool pulls BSR history, price data, calculates an Opportunity Score (0–100), tracks seller count, and detects FBA buybox status — all from a sleek sidebar on any Amazon product page.
The best part? It replaces tools like Jungle Scout ($49+/mo) and Helium 10 using just the Keepa API (~$20/mo) and Rainforest API (pay-per-request). I walked Claude through the entire build — product research scoring, profit calculator, sales estimator, and more.
🔥 What the extension does:
— Injects a slide-out sidebar on any Amazon product page
— Pulls BSR history and price data from Keepa
— Retrieves seller/review data from Rainforest API
— Calculates an Opportunity Score (0–100) based on BSR, competition, and review moat
— Shows a 90-day BSR sparkline trend with actionable insights
— Detects if the buybox winner isn't using FBA (easy entry signal)
📦 Planned features:
— Monthly sales estimator
— FBA profit calculator
— Product watchlist
🛠️ Tech stack:
— Claude AI (Sonnet 4.6) for full code generation
— Chrome Extension (Manifest V3)
— Keepa API for historical data
— Rainforest API for live listing data
👉 Subscribe for daily AI tools and trends: / @1ststepai
🌐 Website: https://1ststep.ai
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