To generate code using Kiota, Right click on a project or location under a project and select Add -> New REST API Client -> Generate with Microsoft Kiota
This will prompt you for a URL to download the OpenAPI specifications file.
If the operation worked successfully then you should see a code-behind file for the OpenAPI specifications. Once you have generated code, all changes to the OpenAPI specifications file will trigger a re-generation of the code-behind file via the KiotaCodeGenerator custom tool
If you already have a OpenAPI specifications file in the project, then you can also generate code using Kiota by right clicking on the file then selecting REST API Client Generator -> Generate with Microsoft Kiota
Kiota generates multiple files and a complex folder structure internally by default, and this extension's default behavior is to merge all files into a single code-behind file. It is possible to generate multiple files directly to the project folder by setting Generate Multiple Files to True in the Kiota settings, under Tools -> REST API Client Code Generator -> Kiota
An example output of generating multiple files looks something like this:
It's possible to run Kiota updates by right clicking on the kiota-lock.json configuration file and selecting Generate Kiota output. You can customize the Kiota configuration directly from the kiota-lock.json file