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I just shipped something I have been wanting to build for a long time.
It is a free crypto sentiment API that any developer can use right now. No signup. No API key. Just call the endpoint and get clean JSON back.
Here is what it returns:
Sentiment score for any coin: BULLISH, BEARISH or NEUTRAL based on 3 signals: price momentum, Fear and Greed Index and RSI(14).
This is @coin_gyaan own proprietary score. Nobody else computes it this way.
Live prices: BTC, ETH, SOL, BNB and XRP with 24h change and market cap.
Fear and Greed Index: the full score and label updated every 15 minutes.
Trending coins: top 5 coins trending right now with live price.
Altcoin Season Index: score based on how many of the top 50 altcoins are outperforming Bitcoin.
All free. All live. All in one API.
The stack: Node.js and Express running on a VPS in Amsterdam. Nginx reverse proxy. SSL via Let's Encrypt. Cache refreshes every 15 minutes so you never hit rate limits downstream.
Built this in one session. Total extra cost: $0.
This is what solo building looks like in 2026.
API link in comment.
#CoinGyaan #BuildInPublic #API #Web3 #Crypto #Bitcoin #Developers #NodeJS #OpenSource

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