EchoSift is a pain intelligence tool that monitors developer complaints across GitHub, Stack Overflow, Hacker News, and Bluesky, then clusters them into validated product opportunities. Instead of guessing what to build, you get an honest verdict on whether a real, recurring pain exists, backed by cross-source data, not vibes. Built for indie hackers and dev-tool founders who'd rather kill a bad idea in ten minutes than after three months of building.