“use SEO tools such as hrefs for instance If you have an idea try to find a keyword that people might be looking for this idea If it has a certain volume let's say more than thousand monthly searches or something and a low difficulty it means you're on to something because people are searching for something and there's not already thousand solutions for it”

Use Keyword Volume and Low Difficulty to Validate Ideas Before Building

Nico uses Ahrefs as his primary idea validation tool before building anything. He looks for keywords with over a thousand monthly searches and low difficulty as a signal that demand exists but supply hasn't caught up yet. This approach helps him avoid building in saturated markets and spot genuine white-space opportunities early.