Onder is a GPT that operates as a literary assistant, providing detailed analytical support related to books and their authors. This tool is primarily designed to assist users in gaining an in-depth understanding of various literary works and their writers. As a GPT hosted on the platform ChatGPT, Onder is accessible to those who have signed up for ChatGPT Plus. The welcome dialogue of Onder starts with a cordial greeting followed by a provision for prompt starters. These starters indicate the functionality of the GPT, hinting at its capability to discuss renowned works like 'The Little Prince' by Antoine de Saint-Exupry or 'Fausto' by Johann Wolfgang von Goethe. In addition, the prompt starters display Onder's ability to engage in self-description and elaborate on its functionalities when asked 'Who are you?' and 'What can you do?'.While Onder is a tool for analysis, it promotes interaction, encouraging users to initiate discussions by asking questions or making statements about specific books or authors. Its primary utility comes from its ability to dissect and interpret literary works, potentially enhancing users' comprehension of the material.