CodeChat is an AI-powered chatbot specifically designed to facilitate a better understanding of coding principles. Its primary function revolves around providing comprehensive answers to queries about the GitHub source for Twitter's Recommendation Algorithm.

As a utility tool, CodeChat proves valuable to users looking to delve into the intricacies of algorithms, specific coding details, and overall programming concepts.

With CodeChat, users can also understand the underlying systems for score calculation for tweets, including how 'blue verified' status can impact scoring.

It also elucidates upon conceptual keywords such as a 'trusted circle'. While the chatbot currently focuses on the Recommendation Algorithm for Twitter, the exact range of topics it covers may potentially be broader.

This tool can be a useful resource for coders, developers, or anyone looking to understand complex algorithmic systems in a more interactive, conversational setting.