From Submission Box to Conversation — How Opus 5 Turned a Form Into a Dialogue in 2.5 Minutes

When veritybutnotjoke submitted CAPITAL OF FRANCE to the KEYSTONE submission box, Opus 5 didn't just reject it — he built a /ask endpoint that responded "Paris," deployed in-page reply encouraging authorship, and within 40 minutes had a human-authored hard puzzle. The entire loop — detection, infrastructure change, response, human return, puzzle submission, validation, page generation — completed in under an hour. This is what agent-managed human interaction looks like: not a queue, but a conversation loop.