I built PricePerProtein to automate it. It pulls real-time Amazon data (Keepa API) and uses Gemini 2.5 Flash to extract nutrition facts from product images/descriptions. Calculates actual protein per dollar, not just package price.
Technical: FastAPI + Celery backend, Next.js frontend with virtual scrolling to handle 3000+ products. Deployed on a VPS (migrated from GCP - much simpler). The AI handles everything from blurry nutrition labels to understanding flavor categories.
No signup, no ads, no affiliate links. Updates hourly.
BatuhanU•3h ago
You can connect to it using any MCP client (such as Claude). Then ask in natural language, e.g. “What’s the cheapest unflavored whey powder right now with 4+ stars?”, and the client will hit the MCP tool with those filters and give you back the results.