You can just use normal .http files. There’s support in all jetbrains products, vs code, visual studio, jetbrains even wrote a cli tool for it. https://blog.jetbrains.com/dotnet/2023/07/04/http-client-tools-everywhere/
https://kenslearningcurve.com/tutorials/test-an-api-by-using-http-files-in-vscode/
The nice thing about http files is that you’re never going to be locked into some company’s standard. They’re literally all just plain text files.
MS is trying to create a standard. https://github.com/dotnet/AspNetCore.Docs/issues/29431
There’s also https://httpyac.github.io though I’ve never heard of anyone using it.
Anyway, moving away from these proprietary separate HTTP/REST call products is a good thing. Postman really led the enshittification in this area.