To add PubSubClient.h Library in Arduino IDE for MQTT protocol

I want to add PubSubClient.h library to ide for home automation project I am unable to find appropriate zip for it.
Most of the zip file are asking for paid services is there any free service?

Hi @vedacoolbudy,

Which IDE are you talking about? Can you share screenshots of the same?
Is the work that you are doing related to the Bolt IoT platform?

If your project does not include the Bolt IoT platform, I am not certain that we will be able to help you.

If this is an Arduino specific question, it would be best for you to post it at the below link