I did create my own altcoins trading bot in Python3. The bot trades on the minute market and is multi-threaded. Which makes that a lot of requests are send to the server of the exchange.
I'm (was) using Bittrex as exchange. Although it did works, the bot required some more fine-tuning. I was in that process when Bittrex blocked my account, without explanation. I guess I was demanding a bit too much from the servers, as the threads addressed as much as 10 requests per seconds.
Now the question is: in order to avoid being blocked, what is an acceptable request rate for such a server ?