/v1/event/mark

The "state" property can be

Booking States:

• accepted (participant accepted booking message)
• declined (participant declined booking message)

Confirmation States:

• confirmed (participant confirmed)
• cancelled (participant cancelled)
• not_coming (participant cancelled)
• needs_reschedule (participant cancelled and requested a reschedule)

Check In States:

• noshow (participant was a noshow)
• arrived (participant arrived)
• ontime (participant arrived ontime)
• late (participant arrived late)

Example Result:

{
  id: 123,
  calendar_id: 456,
  start_time: "2016-04-15T12:00:00-07:00",
  end_time: "2016-04-15T13:00:00-07:00",
  title: "Appointment with Fred",
  location: "",
  content: "",
  is_deleted: false,
  participants: [ {
    id: 789,
    name: "Fred Smith",
    phone: "650-555-1212",
    normalized_phone: "+16505551212",
    email: "[email protected]",
    state: "initial", 
  }],
  custom_data: {
    field_1: "custom value"
  }
}

OAuth scope

Calls authenticated with an OAuth 2.0 bearer token must include the events:write scope. A token without it receives a 403 insufficient_scope response. HTTP Basic auth is not scope-gated.