I built askai (https://github.com/maxvfischer/askai) during the last week to scratch a similar itch of mine. I wanted to be able to quickly get CLI commands that I didn't have on top of mind, by being able to ask questions like "How do you remove a conda environment?" or "How do you get the MX record of a domain using the terminal?".
The CLI I built is a direct integration with GPT3, so it's also possible to ask it other types of questions.