A Smart Clause® is a constituent element of a smart contract. Instead of having to make a full contract executable or 'smart', a user can simply add programmable Smart Clauses to new or existing legal contracts to perform various functionalities.

For example, a 'delivery' Smart Clause and a 'payment' Smart Clause may be added to an existing supply contract template. This easily enables legal contracts to be made programmable and executable.

Smart Clauses respond to data from the outside world (requests) and return responses. They may optionally emit events, such as a payment obligation.

A Smart Clause is an instance of a Template, where the variables for the template have been set to specific values. A Smart Clause may be instantiated by either parsing natural language text that conforms to the structure of the template grammar, or may be instantiated from a JSON object that is an instance of the Template Model for the template.