Reference: https://sc1.checkpoint.com/documents/R80/APIs/#introduction%20

Check Point APIs let system administrators and developers make changes to the security policy with CLI tools and web-services. You can use an API to:
* Use an automated script to perform common tasks
* Integrate Check Point products with 3rd party solutions
* Create products that use and enhance the Check Point solution
Reference: http://dl3.checkpoint.com/paid/29/29532b9eec50d0a947719ae631f640d0/ CP_R80_CheckPoint_API_ReferenceGuide.pdf?
HashKey=1522190468_125d63ea5296b7dadd3e4fd81c708cc5&xtn=.pdf

Explanation
Check Point's FW Monitor is a powerful built-in tool for capturing network traffic at the packet level. The FW Monitor utility captures network packets at multiple capture points along the FireWall inspection chains.
These captured packets can be inspected later using the WireShark
References: