Contact not display fully through API

Contact not display fully through API

Hello Zoho Development Team
I'm working on contact of zoho desk and noticed API get contact list seen not show fully all contact which display on web.
I'm using this api GET /api/v1/contacts for getting contact list. I tried create a contact through API and got the message contact created. That contact also display on web but in result of api is not.
Could you let me know how to create and getting all contacts correctly.

Thanks