I don’t know tbh, as I have never tried this. I am not a node developer though (the few nodes I put my hands on didn’t inherit other nodes) so maybe @marcus knows more on this once he’s back next year.
You can definitely extend credentials from other credentials. This is what we do with Google Sheets for example, these extend the default Google credentials.
Hi @Tk8and15,
though theoretically possible I am not aware of any n8n node that extends/inherits another existing nodes and I have never tried it myself.
If you want to create your own custom node based on the HttpRequest node you could just copy/paste it’s source code into your custom node folder and give it a unique name and displayName. Did you try that and is it working?