Used to get a contact....The first matching contact is returned by the API....Example for how to find a contact by email address:
Find by email address /api/v1/contact?...email=ben@example.com
Example for how to find a contact by mobile phone:
Find by mobile phone /api/v1/contact?
Create or Update a Contact
Creates or updates a contact....A new contact only requires either a valid email address or valid mobile phone number.
Add Contacts to a Segment
Adding contacts is accomplished by either including an array of contact unique ids (dsid) or passing in a search query which will add all contacts that match the specified criteria.