Core Concepts

You write Voice Applications with Violet by composing what users-can-say and users-will-hear in voice scripts, writing reusable scripts as widgets, externalizing integration logic into plugins, and adding application logic in services.


Once a user initiates a Voice Application a conversation is said to have begun. Conversations are by default ongoing with Violet, i.e. after a response from the application an user is expected to respond back. Conversations can be ended by the application by calling endConversation in your script and by the user by just not responding back to the application.

Goals (Dialog Management)

Consider conversations as having a set of small milestones or Goals. Goals allow for the grouping of application and user responses. Your voice script can add a goal or clear a goal, and later respond differently depending on if a goal has been set. Scripts can also define goals that allow for the conversation engine to prompt the user and to wait for one of multiple responses back.

User and Application Response

Your Voice Scripts are a list of items that the user might say followed by how you want your application to respond to it. Intents are user responses that your application can respond to.

When an intents is triggered your application logic is called with a response parameter to allow your application to respond. You can say something or ask for something from the user.

Under the covers all the calls to the response object are converted in an SSML string and sent to the users voice-enabled device.