afk.ai is a browser-based AI auto-rigging tool that automatically places skeletons and paints skin weights on uploaded 3D models without requiring manual adjustment. It supports characters, animals, creatures, robots, and props across fourteen skeleton templates including humans, quadrupeds, dragons, birds, snakes, fish, and dinosaurs. Users can preview and select from over 170 animations before exporting rigged GLB or FBX files ready for Unity, Unreal Engine, Godot, Blender, or Three.js. afk.ai also offers an npm package and MCP server for developers who want to rig models programmatically or integrate auto-rigging into AI workflows.