Is trading bot legal?

I'm curious, is trading with a bot legal? I've heard about the potential benefits of automating trades, but I want to make sure I'm operating within the bounds of the law. Can you clarify whether or not using a trading bot is permissible, and if there are any specific regulations or guidelines I should be aware of? I'm particularly interested in understanding the legality of using bots in cryptocurrency trading, as well as in traditional financial markets. Thanks for your help!