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Drop in a mesh and MonRig gives it a skeleton and a whole procedural moveset — idle, walk, run, attacks, hits, even wings and fire. One mesh in, a full animation set out — for Unity, Unreal, Godot or the web.
Give a creature its skeleton and it moves on its own. One mesh in — a full procedural moveset out.
or click to browse — then pick an archetype and rig it
Up to 300,000 vertices — game creatures usually have 5,000–50,000.
Seven parts, one loop. See the whole pipeline →
Click a few landmarks — muzzle, hips, a paw, an ear tip — and the fitter pins to them, then rates its own work green, yellow or red. When it is unsure it says so and names the joints — you correct those, not the whole rig.
A GPU worker proposes the landmarks — several skeletons sampled by an AI model, each turned into markers you check and nudge before the guided fit. Three free runs per account, one per model; then 1 credit a run with two free retries. Every proposal is kept. When no GPU worker is online the button says so; Guided Rig always works. The only AI in MonRig: it estimates the markers, nothing else.
— ready skeletons across — archetypes — cat, crab, centipede, sauropod, wyvern, jellyfish. Start from one and drag it onto your creature.
— clips generated from your creature's own anatomy — not retargeted from a motion library. Steered by dials, not keyframes.
Capes and skirts are real bone sheets that collide with the legs and drape around them — baked into the file, so they cost nothing at runtime.
A standard FBX with the skinned mesh and every baked take — Unity, Unreal, Godot, Blender or a three.js page. Unity gets extras: a generated AnimatorController and animation events on the right frames, so the creature imports with its states already wired.
An MCP server lets Claude Code — or any MCP client — rig, animate, verify and bake your creatures with the same engine. One command to connect, browser sign-in, nothing installed. Built for vibe-coded games as much as for the editor.
Rig a mon by hand and preview every animation in the editor for free. Any purchase — a credit pack or a plan — unlocks baking, downloads, more creatures and commercial use; a plan adds the AI agent tools (MCP) and cheaper credits. Every account gets three free Auto rig runs, then 1 credit a run. Yearly plans get 2 months free.