Systems, methods, and devices for the automated, community-based exchange of procurement documents. In some embodiments, there may be different sets of rules for each of a number of different communities of trading partners. Each set of rules may be made up of rules data for direct peer-to-peer exchange and/or transformation of procurement documents in respective communities. By way of example, a host trading partner may select the rules for exchange of procurement documents for a community. Invited trading partners may register for the community, and rules for the community may then be distributed to the registered trading partners.