How to send IFTTT request with AT command

Hello,
I'm using a Arduino Uno with DHT22 and connect to an ESP8266.
I use AT command to update sensor values to thinkspeak and it works fine.
I would like also to get notification when sensor value is to high and would like to use IFTTT.
I have created the trigger in IFTTT => Webhooks Integrations - Connect Your Apps with IFTTT......
My question is do you have sample code to send http throught AT command from arduino to ESP8266.
Many thanks in advance for your help and advise
Olivier