1. which brokers can you recommend for arbitage trading (low fees, fast withdraw and deposit, no minimum transactions etc).
2. Is there a tool for arbitage trading?
Depends what kind of arbitrage. BTC/fiat arbitrage? Not really possible due to restrictions on fiat movement through banks. There are some cross-exchange bots around that rebalance accounts based on arbitrage
opportunities but I'm not sure if they work. It's been a couple years since I saw anyone talking about them.