Ilive in Brazil and have a "black box system" for forex, and I'm
looking for a forex trading firms where I may run my system. Would you
please indicate some in USA or Europe?

I would think think that the people who built the robot system to do
the trades would provide that connection. Do you have a contact number
for them?

Did you try it out without making the trades?  Better to paper trade a big loss
than to spend the money for real. Good luck or rather break a leg.