Contrarian Signals

Project intro

Contrarian Signals is a market sentiment terminal that turns fear and greed into a daily signal. It aggregates the three canonical sentiment gauges — the CNN Fear & Greed Index, the AAII investor sentiment survey, and the BofA Sell Side Indicator — into one dashboard, then emails you an alert every morning at 8:00 ET when it's time to pay attention. The thesis is the classic one: be fearful when others are greedy and greedy when others are fearful, but with the data actually in front of you instead of a gut feeling. The build story is on record: the author's Show HN post carries the disclaimer "this was ~70% vibe coded using Cursor / Claude Code." The product is a live subscription service ($9/month, three alerts free) backed by real daily data on its homepage, so the site you visit is the product working. A candid caveat: the Show HN post dates from early 2026 (about nine months before this write-up), so treat the "actively maintained" claim as evidenced by the live subscription product and the current data on the site rather than by recent public updates. For VibeFix readers it's a clean example of a vibe-coded, revenue-generating data product — and of how honest disclosure should look.