To place an autonomous agent you don't need its brand — you need its coordinates. This taxonomy encodes each agent along seven orthogonal axes, so comparing two systems reduces to spotting where their vectors differ, and governance risk becomes a function of those coordinates rather than the marketing. It maps ~18 agents from every major lab plus the open-source frontier, keeps the harness layer deliberately apart, and reads the market's shape: which cells the labs occupy, which one only open source dares, and where the governance line falls.