account in zoho crm

account in zoho crm

Hi everyone, is there anybody can help me? I have a flow in my aplication, so i wanna do a couple step to create a contract. here is my plan;
- create an account
- add contact for the account
- make a deal for related contact

can all of these step use api from zoho crm? if so, what api should I use, I dont find any api in this url https://www.zoho.com/crm/developer/docs/api/v3/

Best regards
Ary