The "Advent of Code" is a popular annual event where programmers solve a series of daily coding challenges in the weeks leading up to Christmas. A new project, "at://advent", aims to bring a similar experience to the AT Protocol ecosystem. This initiative, highlighted by user @baileytownsend.dev, will present a series of challenges designed to encourage developers to explore and build on the AT Protocol. This event has the potential to foster innovation and community engagement within the Bluesky developer community.