Gentlemen Relation of agent and principal,conflict of interes in case if both party involved in equal business , was defined in Romian Law . Belov is list of pure agents /check exchange -" Is broker pure agent ?Is broker member of exchange ? Did broker trade for proprietray account ? " Ameritrade -stock,options on stock Optionsxpress- stock,options on stock ,future for 25k$ account Thinkorswim -stock,options on stock ,en,es,ert MBTrading -stock,options on stock ,CME,CBOT e-mini and currency fx ,ed . Pure agent for spot fx(!) Openecry -pure agent for future and options on future not clear about currency fx . Author would very pleased for critical opinion and iinformation about pure agents in another countries (U.K.,France ,Hong- Kong,Japan,Australia ,Swiss &/ Definition is -Company and she's affiliate not involved in trading direct and indirect against client's interess . Order payement flow is another question.As example by OX can be selected free. Author is Germany resident and not informed about existence pure agent on Germany Market . Your respectfully milstar