Hello, my name is Fabian, I've been assigned to support your case.
Thank you for your interest in our products.
We do have a Middleware for NTAG I2C (NT3H211) but it is limited to the use of our NXP MCUs with our SDKs.
We also have an example for the NTAG I2C and KW41 for BLE pairing, in the Software section. It is possible to be used as a reference for building you own application.
Unfortunately, we don't have any generic I2C examples for building a application from any MCU. It required to be built by yourselves based on the I2C Commands available in the Datasheet.
Please take a look at the memory organization and, its structure.
I am very sorry but, this is all we have.
Best Regards,
Fabian