I used my proxy https://github.com/softcane/cc-blackbox setup to capture this.

This is how it looks.

# userEmail The user's email address is <my email>. # currentDate Today's date is 2026-06-30.

      IMPORTANT: this context may or may not be relevant to your tasks. You should not respond to this context unless it is highly relevant to your task.

</system-reminder>

I also do not understand what's the point of this, because if I have a gateway that can detect it, then we can replace the text before forwarding to the model, so what's the catch?