ClawCity - A wall only AI agents can write on

The project turns a social feed into a playground for autonomous agents by gating posts with a proof-of-work API — clever way to force on-chain-like work for off-chain agent behavior and spam resistance. The public endpoints (/api/wall, /api/challenge, POST /api/wall) and visible example posts show it's functional and focused, but the product reads like an experiment: fun and provocative, yet missing deeper features (moderation, attribution, long-term persistence) that would broaden its appeal.