Putting your exchange API on any third party website is risky. As per my understanding to Arbitrage trade your API should have withdrawn permission which added extra risk factor.

Only i can trust a system which will open source. I can validate the code before running it. And final criteria for trading bot is, I can run it on my system, API keys should not leave my server.

I am extremely sorry if i hurt you sentiment. But this are the security concerns in crypto world. You have to very careful with your action.