Stenography is an AI tool that provides automatic documentation for code. It can document entire codebases whenever you hit save. It offers a powerful API that allows you to pass in code and receive explanations in plain English. The tool also provides Stack Overflow suggestions and linked documentation, eliminating the need to search for answers on the internet. Stenography integrates with various extensions, making it compatible with different code environments. One of its standout features is its focus on privacy - it uses a passthrough API and does not store any code, ensuring that your code remains secure. The tool offers 250 free monthly invocations and can be used within Visual Studio Code or through your own extension. Stenography was created by Bram Adams, an OpenAI Developer Ambassador, and GPT-3 O"Reilly Media instructor. Overall, this tool aims to streamline the process of code documentation by providing automated, customizable explanations in an efficient and secure manner.