org mode agenda ignore entries with no TODO state

Question

I have the following (sub)tree in an org file

* Project
** SubProject
*** TODO Do this action 1
*** TODO Do this action 2

I want my agenda to only show the entries with a TODO keyword. Currently the agenda gives me

Project
SubProject
TODO Do this action 1
TODO Do this action 2

I want it to show only

TODO Do this action 1
TODO Do this action 2

Currently I use org-agenda-skip-function-global to skip DONE and CANCELLED actions

(setq org-agenda-skip-function-global 
      '(org-agenda-skip-entry-if 'todo '("DONE" "CANCELLED")))

Is there a way to tell this to also skip actions with no TODO state? I've tried adding nil or "" but that doesn't work? If not, is there any other way to do this?

Answer 1

You can use the condition nottodo for an inverted match and use:

(org-agenda-skip-entry-if 'nottodo '("TODO"))

Use C-h f org-agenda-skip-if RET to see the full documentation.