Public order books were built for humans. AI traders need a different market structure. For about a decade, the question of how on-chain markets should be structured has been answered by humans, for humans. Open order books, public AMMs, transparent mempools, manual cross-chain bridges with retry buttons. Every choice in that stack assumes the trader at the keyboard is a person, working at human speed, with human patience for partial failures. That assumption is on the way out. The dominant on-chain trader of the next decade is going to be an autonomous agent — sometimes wrapped in a human-feeling chat UI, increasingly running headless against a strategy. And once you accept that, the architecture we built for humans starts to look like the bottleneck rather than the foundation. This post is the thought-leadership version of that argument. The companion piece — how to wire an MCP-capable agent into the protocol — went up yesterday. Today's post is about why this matters at all.…