Firefox extension, need advice

Question

I've never built a ff extension before and before I start I want some feedback on my idea to make sure its possible.

I want a firefox extension that allows me to supply a url with parameters in GET format, the extension would take the url, parse it, and submit the request as POST rather than GET.

Is this possible? and could someone give me some advice on how to start designing an extension? or point me at a tutorial?

Answer 1

I don't know for sure, but as the Tamper Data plugin is able to manipulate HTTP request, it should be possible.

Have a look at the source code of the plugin to get some ideas.