A developer built a Bitcoin sentiment tracker after repeatedly missing market moves by checking social media manually. The system aggregates data from seven sources including Crypto Twitter, Reddit, and news sites into a single 0-100 score, categorizing sentiment from extreme fear to greed.

The tool assigns confidence scores and weights sources differently, noting Reddit is fast but noisy while news is slower but reliable. The creator learned extremes are actionable, but mid-range scores offer little value. An API is now available on RapidAPI with a 100-request monthly free tier.

Current endpoints provide real-time scores, breakdowns by source, and historical data. The developer plans to add assets like ETH and SOL, plus real-time websockets. They caution it's a data source, not a price predictor, acknowledging lag and false signals, especially in neutral ranges.