Systems and methods are provided to facilitate use of agreement information via an agreement modeling system. According to one embodiment, transaction information is evaluated based on agreement information stored in the agreement modeling system. According to another embodiment, an applicability of an agreement term may be determined based on agreement information, such as an expiration date associated with the agreement term. According to another embodiment, a user's access to agreement information is controlled by security information, such as a security class or attribute. According to another embodiment, multiple users may access agreement information in accordance with a concurrency management process.