So you were generating and evaluating the performance of your CLAUDE.md files? And you got banned for it?
Writing the best possible specs for these agents seems the most productive goal they could achieve.
Sort of like MS's old chatbot that turned into a Nazi overnight, but this time with one agent simply getting tired of the other agent's lack of progress (for some definition of progress - I'm still not entirely sure what the author was feeding into Claude1 alongside errors from Claude2).
So, no circular prompt feeding at all. Just a normal iterate-test-repeat loop that happened to involve two agents.