As i am not able to find out much about cloud client on internet. Is there any documentation available for this?
You can download from vRealize CloudClient: vRealize CloudClient 4.1 - VMware Developer Center
Direct link: https://download3.vmware.com/software/open-source/cloudclient/cloudclient-docs-4.1.0-3792252.zip
very limited documentation, this i have seen earlier i was looking for more detailed one.
What (specifically) are you looking for?
Just an example like there is a doc for RVC, Similar like that detailed doc for cloud client