The New Astro API is a Flask API designed for the Intermediate Android course by Aristidevs. The API provides horoscope information for different zodiac signs through POST and GET requests. The development is presented in a playful and informal tone, highlighting its Spanglish readme and the disclaimer regarding potential translation quirks.
Flask is a lightweight and popular web framework for Python, known for its simplicity and flexibility. It is widely used to build web applications, providing a minimalistic approach to web development with features like routing, templates, and support for extensions.