Frank & Aaron I did a little more digging. I could not see any kind info in the Rest API representation for a post. Then I saw:

Posting capability via custom REST API endpoint has been removed due improved Micropub support

from: dshanske/indieweb-post-kinds

At the moment I’d be more than happy to post as a draft and set the kind myself. I suspect that I’d reply using the WordPress editor, like now, rather than Drummer anyway.

Frank’s technique works. This is my second test.

The possibilities for using Drummer just opened up for me. The script looks as if it is going to open my eyes a bit. I’ve only really scripted posting to WordPress via XML-RPC using AppleScript. I am guess tags and categories could be handles in the same way Frank get the image and inlineImage attributes from items?

This could be delightful.