The speaker in the YouTube video is discussing the process of creating and publishing a new extension for Visual Studio Code (VS Code) using the VS Code API. The extension is a code snippet extension that generates boilerplate code for an Express server, as well as different root methods such as GET, POST, PUT, and DELETE. The speaker also includes a MongoDB connection. To begin, the speaker goes to the official VS Code API page and copies some code, which they then paste into the terminal. This generates the necessary scaffolds, dependencies, and code for the extension. The speaker then proceeds to copy and paste more code, filling in basic details about the extension, such as the type, name, and language. They then go on to make changes to the package.json and encoded snippet files, including adding a prefix or trigger for the extension. They also add a git repository for the extension and run it by pressing F5. The speaker then goes on to improve the code and add some blank lines and spaces. They also add more functionalities to the extension using chat GPT to generate code snippets. Finally, the speaker describes the process of publishing the extension on the Visual Studio Marketplace, including creating an Azure DevOps account and packaging the extension using the VSC package command. They also update the version and description of the extension and add a license file. The video ends with the speaker demonstrating the use of the extension in VS Code and encouraging viewers to try creating and publishing their own extensions. ChatGpt Tutorial Hub.