A commerce system has a virtual marketplace. A personal shopping agent is connected to the virtual marketplace. A sales agent is connected to the virtual marketplace. An intent to buy is received through the personal shopping agent. The intent to buy is satisfied with a product selected by a negotiation between the personal shopping agent and the sales agent. A consideration set is provided. The intent to buy is satisfied with a product from the consideration set. An API is provided for connecting to the sales agent. A retailer or manufacturer control system is connected to the sales agent through the API. The control system controls the negotiation using the control system. Configuration data is received through the personal shopping agent. The product is selected to satisfy the configuration data. A database including transactional log data is used during the negotiation.
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