The POST request body should look like the following:

{
  "contacts": [
    CONTACTS TO CREATE
  ]
}

Each Contact should have the following properties

Field	Type	Description
address_book	String (Required unless address_book_id specified)	The name of the address book to add the contact to. If the address book doesn't exist then a new one will be provisioned.
address_book_id	Integer (Required unless address_book specified)	The id of the address book.
name	String (Required)	The full name of the contact. E.g. Fred Smith NOTE: you can provide either "name" or you can provide "first_name" and "last_name". "name" will take precedence.
first_name	String (Required)	The first name of the contact. E.g. Fred
last_name	String (Required)	The last name of the contact. E.g. Fred
phone	String	A phone number for the contact . E.g. 650-555-1212. If the contact has multiple phone numbers then pass the phone_numbers array instead.
email	String	An email address for the contact. E.g. fred@gmail.com . If the contact has multiple email addresses then pass the email_address array instead.
phone_numbers	Array	An array of phone numbers to add to the contact. See below for phone number fields
email_addresses	Array	An array of email addresses to add to the contact. See below for the email address fields.
external_id	String	An optional unique identifier (should be unique across all calendars in user's account). Can be used to fetch updates and update events.

Each Phone number object should include the following properties

Field	Type	Description
number	String	The number of the contact. E.g. 650-555-1212
is_mobile	Boolean	Sets the phone type as "mobile" for the address book specified.
type	String	The type of the phone number to be added. Each address book type has a different set of phone types. List of phone types can be fetched from the /v1/address_books endpoint.
is_primary	Boolean	True if this should be the primary phone number to use when sending email to this contact.

Each email address object should include the following properties

Field	Type	Description
address	String	The email address of the contact. E.g. fred@gmail.com
type	String	The type of email address. Each address book type has a different set of phone types. List of email address types can be fetched from the /v1/address_books endpoint.
is_primary	Boolean	True if this should be the primary email address to use when sending email to this contact.

Example Result:

{ 
  contacts: [ CONTACTS CREATED ]
}