The only reason AI agents don't care about XML is because the developers decided, yet again, to attempt to recreate the benefits of REST on top of JSON.
That's been tried multiple times over the last two decades and it just ends up with a patchwork of conventions and rules defining how to jam a square peg into a round hole.
That's been tried multiple times over the last two decades and it just ends up with a patchwork of conventions and rules defining how to jam a square peg into a round hole.