I did a thing. while working on native NFC capabilities, i ended up writing a test program which reads all the info from EMV cards (such as Visa/Master/Amex) and dumps it to try and learn the payload.
the info shown in the #GTK interface is fairly basic mostly as demo, but it dumps a lot more to the shell:
https://github.com/FakeShell/nfc-tester
it may be possible to use this for malicious purposes with the right skill set, so please use it responsibly =)