Contact consolidation across multiple services

A method for retrieving contacts from a plurality of federated services, comprising:

• receiving an authentication notification from an identity manager, the authentication notification including an identifier for a user account and a single sign-on token for the user account;
• identifying a federated service to authenticate on behalf of the user account;
• transmitting the single sign-on token to the federated service for authentication;
• receiving an authentication token and a refresh token from the federated service;
• determining that the authentication token is set to expire within a threshold time period;
• determining that the refresh token has not expired;
• and
• transmitting the refresh token to the federated service for a replacement authentication token.

A non-transitory computer readable medium for retrieving contacts from a plurality of federated services, the non-transitory computer readable medium comprising machine-readable instructions that, when executed by a processor of a computing device, cause the computing device to at least:

• receive an authentication notification from an identity manager, the authentication notification including an identifier for a user account and a single sign-on token for the user account;
• identify a federated service to authenticate on behalf of the user account;
• transmit the single sign-on token to the federated service for authentication;
• receive an authentication token and a refresh token from the federated service;
• determine that the authentication token is set to expire within a threshold time period;
• determine that the refresh token has not expired;
• and
• transmit the refresh token to the federated service for a replacement authentication token.