Non-interactively filter the agenda using tags?

[o . rojon]

Hello everyone,

I hope I'm not asking something that has been answered 100 times, I made 
a search to ensure nothing extremely obious slipped under the radar (I 
also asked on IRC).

I know that when you are in the agenda view that displays appointments, 
it is possible to interactively filter in order to take into account a 
specific tag (inclusive or exclusive). However, I would like to make an 
agenda view which does this non-interactively.

Essentially, what I would love to have at my disposal is to have 
something like the MATCH you have in (tags-todo MATCH ...) for agenda - 
because as of yet, this seems to be impossible. I have tried to look for 
different variables and/or functions but couldn't find anything that 
matches.

Am I overlooking something obvious? If so, feel free to point me to 
solutions so I can do my homework properly ;-)

Greetings, have a good day,
Olivier