Yes, I use such a bot for trading.
Custom developed, it integrates via API on several different popular exchanges* and generates passive income for me via arbitrage (buy bitcoin cheapest possible on x platform, sell higher on y platform). Daily profit varies obviously due to BTC price fluctuations, arbitrage fluctuations, etc. If anybody is seriously interested in it and has a decent offer, PM me

Not willing to release it publicly however for obvious reasons.
*you must have valid and existing accounts on any exchange you want it to use that is supported.