The **ad‑external** package is a small, reusable library published by RED Interactive Agency that supplies common utilities for working with third‑party ad‑tech resources (e.g., loading external scripts, handling cross‑domain messaging, and managing ad‑related data). It’s intended for front‑end developers and ad‑operations teams building or maintaining web‑based advertising integrations who need a lightweight, battle‑tested helper set that can be installed via npm.