whmcs module (simple api)

Hello, Need it to support auto add, change password (in whmc for clients) auto delete/suspend. Need to be able to chose in whmc if pptpd or openvpn. aka option 1 or option2. Need to be able to add multible servers in whmc.(maybe as simple as just calling them like module,module2,module3,module4 and upload them to whmc. where token is the API key. What is the prices for this job ? And how long will it take to make ? option1 curl -d "username=newuser&password=password" http://localhost:8080/api/add/pptpd?token=YWRtaW5kZWZhdWx0 adds a new user. curl -d "username=newuser&password=password" http://localhost:8080/api/change/pptpd?token=YWRtaW5kZWZhdWx0 change user password. curl -d "username=newuser" http://localhost:8080/api/delete/pptpd?token=YWRtaW5kZWZhdWx0 delete user option2 curl -d "username=newuser&password=password" http://localhost:8080/api/add/openvpn?token=YWRtaW5kZWZhdWx0 adds a new user. curl -d "username=newuser&password=password" http://localhost:8080/api/change/openvpn?token=YWRtaW5kZWZhdWx0 change user password. curl -d "username=newuser" http://localhost:8080/api/delete/openvpn?token=YWRtaW5kZWZhdWx0 delete user