Guides to find what sells and grow it
Practical methods for product research, competitor ads, store teardowns and growth, with the data to back each step.
Shopify tools
How to analyze any Shopify store: traffic, apps, theme, best sellers
A step-by-step checklist for tearing down any Shopify store, what each signal tells you and what it doesn't, and how to run the whole teardown in a few minutes.
Shopify toolsHow to use an AI agent for e-commerce research with MCP
MCP in plain words, how to connect an AI agent to the SellWinners MCP server, prompts that work for product, ad and store research, and how tool calls use your credits.
Shopify toolsProfit margin and break-even ROAS for a Shopify product, explained
How gross, contribution and net margin differ, which costs to count on every order, and a fully worked example that ends with your break-even ROAS and CPA.
See what's winning in your market
Search Shopify stores and Meta ads for free. The Free plan includes the web app and the MCP server (150 credits a month), without the API. Paid plans add every dataset and the API, with more credits.