The problem
Steam's "Overwhelmingly Positive" badge is an all-time average. It can stay green for weeks after a patch, a pricing change, or a broken launch actually tanks a game's rating. Most devs find out from an angry tweet or a Reddit thread, not from Steam itself.
I'd already built a similar review-mining tool for the App Store (a "copy+10%" market-research Actor — different post, different audience). Same week, I wondered: does Steam expose anything as clean as Apple's public RSS/Lookup endpoints? Turns out yes — better, actually.
What Steam gives you for free
Two public, zero-auth endpoints:







