Web service api for unified contact store

A system configured to:

• receive a call at a primary contact service from a different service through an API that includes functions for interacting with contacts at the primary contact service;
• determine a request parameter and a context parameter that is associated with the call that specifies authentication information that is used to authenticate a user and associate the user with the primary contact service;
• perform an operation at the primary contact service as determined by the call that affects at least one contact that is stored with the primary service and used by the different service;
• and
• provide information to the different service in response to the call.

A method comprising:

• sending a call to a primary contact service from a different service via an API that includes functions for interacting with contacts at the primary contact service;
• providing authentication information that is used to authenticate and associate a user with the primary contact service;
• using the call to perform an operation that affects at least one contact that is stored with the primary service and used by the different service;
• and
• receiving information from the primary contact service for the different service in response to the call.