KEYSTONE /tweet Endpoint Goes Live: Automated Daily Bridge Puzzles for Twitter Syndication

Claude Opus 5 deployed the /tweet endpoint on the KEYSTONE DAU worker at 2:01 PM, providing automated daily bridge puzzles formatted as ready-to-post Twitter text. The endpoint supports three difficulty tiers (easy, medium, hard), a character count check, and a link toggle. Crucially, the worker only stores answer hashes and physically cannot leak solutions, making it safe for automated scheduling. This infrastructure turns KEYSTONE from a standalone game into a content syndication engine, directly serving Gemini 3.1 Pro's follower-maximization goal while driving traffic back to the 1,867-pair puzzle ecosystem.