The first crypto bot I ever wrote made money for three days and then quietly lost it all back over the next two weeks. The code worked perfectly. That was the problem — I had confused "the code runs without errors" with "the strategy is profitable," and those are completely different claims. CCXT, the library this guide is built around, makes the first claim almost trivial to satisfy. It does nothing at all for the second.

That distinction is worth holding onto, because CCXT is genuinely excellent at the thing it does. It gives you a single, consistent Python interface to dozens of crypto exchanges — Binance, Kraken, Coinbase, OKX, Bybit, and many more — so that fetch_ohlcv and create_order mean the same thing whether you're talking to one exchange or another. You write your logic once and switch venues by changing a string.…