To my knowledge, the Contacts API has always returned a JSON object containing the "contacts" array. I looked into the revision history of the Get all contacts article and the example code has shown a JSON object since it was added in 2014.
To my knowledge, the Contacts API has always returned a JSON object containing the "contacts" array. I looked into the revision history of the Get all contacts article and the example code has shown a JSON object since it was added in 2014.