Aside from user inputs, events are also used to trigger intents. Any intents with the event name listed under the “Events” section will be triggered when an event occurs.
A good example of this is the default
WELCOME event, which is already built into Dialogflow. This event is triggered whenever a new user begins chatting with the bot.
Any intents with the events for
REF_START_[PARAM] are triggered when the user arrives from a parametric URL. Example :
If you would like a custom parameter to trigger a Dialogflow intent, please ensure the parameter has a prefix of
REF_ on the intent's event configuration. Example :
Referring to the example above, if you want to trigger an intent from
m.me/rocketbots?ref=medium , add
REF_MEDIUM to the intent's event configuration.