To integrate with Phone.com OpenAPIs, developers must follow the OAuth 2.0 authorization protocol. This guide outlines the necessary steps, tools, and parameters required to authenticate, connect, and test Phone.com APIs using platforms like Postman.To be able to use Phone.com OpenAPIs you need to have Phone.com login credentials.Once you login to the Phone.com application (Phone.com), navigate to ‘Integrations > API Connect’ as shown in below image.OAuth2.0 specification needs few parameters to be sent by client. Below are the names of the parameters and corresponding values for Phone.com that need to be sent to use Phone.com OpenAPIs:Scope : For below API functions respective scopes should be addedThe Auth URL, Access Token URL and Refresh Token URL can be found on clicking of the View Authorizer Credentials button as shown in below image.You should enter the callback URL and then click connect to get the Client ID, Client Secret and API Key to use for OAuth2.0 calls to APIs. Please see below image.If we use postman to test Phone.com OpenAPIs then we need to use the postman callback URL in the Callback URLs input box as shown in above image and click connect to get the other required auth params for OAuth calls.The other required params for OAuth calls are :Client ID : [Is unique to client. Once user clicks connect button this value is shown]Client Secret : [Is unique to client. Once user clicks connect button this value is shown]API Key : [Is unique to client. Once user clicks connect button this value is shown] Modified at 2025-11-12 09:38:20