<s>I'm not entirely sure but I think</s> if the file name ends with .user.js like HN%20ChatGPT%20Summarize.user.js it will prompt to install when opening the raw file.

haha, like so works too

https://raw.githubusercontent.com/SerJaimeLannister/tampermo...

Alright so I did change the name of the file from HN ChatGPT Summarize.js to hn-summarize-ai.user.js

Is this what you are talking about? If you need any cooperation from my side lemme know, I don't know too much about tampermonkey but I end up using it for my mini scripts because its way much easier to deal with compared to building pure extensions themselves and these have their own editors as well so I just copy paste for a faster way to prototype with stuff like this