Okay, I didn't find the commands in the AppGameKit online help, but did find them in my local copy of v1088 (which is what you should work with, to make sure you have the best version that supports those commands).
I don't know if anyone else has tried these commands (I don't have any devices that support it).
There appears to be a command to get NFC data from another NFC device and another to check to see if there is data waiting.
If the tags (I finally figured out what you meant by 'NFC tag data' from the images) are recognizable by the GetRawNFCCount command, then maybe the GetRawNFCData command will work, assuming the tags send data.
I might guess that the GetRawNFCCount command queries devices, which might trigger the tags to send data automatically.
If you have a device that has NFC capability and some tags to test with, it should be simple to see if it works.
Cheers,
Ancient Lady
AGK Community Tester and AppGameKit Master