A tiny module that does nothing more advanced than add a GM Only chat card informing them if an attack roll hits the targeted tokens.
The card is created by the connected GM, and is only visible to them even when a player rolls an attack. It displays the target's AC, the attack roll result, and whether the roll Hits, Misses, Criticals, or Fumbles.
There are no further automations tied to this check, it is purely informational.