CoinGecko API Skill Query the CoinGecko API for comprehensive crypto market data — prices, historical charts, exchange volumes, trending tokens, global stats, and category breakdowns. The free tier requires no API key and supports 30 calls/min. When to Use This Skill - Macro analysis : Global market cap, BTC dominance, total volume trends - Historical data : Daily/hourly OHLCV going back years (not minutes-level) - Cross-exchange comparisons : Exchange volume rankings and trust scores - Trending/discovery : What tokens are trending on CoinGecko in the last 24h - Category analysis : Compare De…