This is awesome. I usually just have a scratch file that uses an http library (eg. requests for python) and log the response. Do you prefer this over something like postman?
Yes, I only use this now. I used postman for a while, but I remember last time I tried it, it was way too complex, had to create projects or accounts (or something like that) to make a simple request.
I now only use this VSCode extension, I have some .http files saved in my project with requests I do often. If I am trying an API online, I just copy-paste their cURL examples and run them, it's useful because on Windows there is no cURL cmd preinstalled. It's also nice that you get code highlighting by default in VSCode for the .http files.
Another big advantage is that you don't have to open a new console or application. You just do CTRL+N to open a new file and ALT+CTR+R to send the request. So you can do CTRL+N, write google.com, ALT+CTR+R and you can see the source-code of google.com in a VSCode file.
Having the request in a file means you can easily change it, save it or version it.