Jumper – Cute Crab Robot

KingKong Robotics released Jumper, an open-source 22-DoF crab robot project whose repository is designed to be opened in an AI coding assistant so users can describe desired appearances, motions and scenes in one sentence. The project lets users create and export .skin appearance files, train and package tripod-gait motions as .app bundles, and build .map scenes, with training built on mjlab, rsl_rl, MuJoCo and MuJoCo Warp. Maintainer-owned materials are licensed under Apache-2.0, and a free Jumper is offered through the Crab Robot Challenge 2026.

English | 简体中文 https://github.com/KingKongRobotics/jumper/blob/main/README.zh.md Design appearances. Train motions. Create worlds for Jumper , a 22-DoF crab robot. View hardware → https://github.com/KingKongRobotics/jumper/blob/main/docs/HARDWARE.md Open this repository in an AI coding assistant and describe what you want in one sentence. The linked projects and guides below give your assistant the workflows to follow. 🦀 Get a free Jumper Find out how → https://beunlimited.me/zh/events/crab-robot-challenge-2026 Design a warm sand ranger appearance for Jumper with coordinated body and limb colors, then export a .skin . | Warm sand ranger https://github.com/KingKongRobotics/jumper-design/blob/be74e0f2e5e2433d24a3a7b1c1aa0dbeae480356/library/skins/warm-sand-ranger-integrated-v2.skin | Silver armor https://github.com/KingKongRobotics/jumper-design/blob/be74e0f2e5e2433d24a3a7b1c1aa0dbeae480356/library/skins/mecha-tripo-v3.skin | Raphael Turtle https://github.com/KingKongRobotics/jumper-design/blob/be74e0f2e5e2433d24a3a7b1c1aa0dbeae480356/library/skins/raphael-turtle-v1.skin | Train a stable tripod gait for Jumper, replay and evaluate the result, then package it as an .app . | Walk | Posture | Gesture | | Dance | Jump | Grasp | Create a park pump-track scene for Jumper with rolling terrain, trees and benches, then export a .map . | Park pump track https://github.com/KingKongRobotics/jumper-design/blob/be74e0f2e5e2433d24a3a7b1c1aa0dbeae480356/library/maps/park-pump-track.map | Bedroom https://github.com/KingKongRobotics/jumper-design/blob/be74e0f2e5e2433d24a3a7b1c1aa0dbeae480356/library/maps/bedroom.map | Soccer https://github.com/KingKongRobotics/jumper-design/blob/be74e0f2e5e2433d24a3a7b1c1aa0dbeae480356/library/maps/soccer.map | | Resource | Purpose | |---|---| | jumper-design https://github.com/KingKongRobotics/jumper-design | Appearance and scene creation; your assistant reads its instructions https://github.com/KingKongRobotics/jumper-design/blob/main/AGENTS.md and uses its tools as needed. | | Training tutorial https://github.com/KingKongRobotics/jumper/blob/main/docs/TUTORIAL.md | Motion training, replay and policy export in this repository. | | Motion bundles https://github.com/KingKongRobotics/jumper/blob/main/deploy/BUNDLE.md | Package trained motions and their controller as an .app ; see the build guide https://github.com/KingKongRobotics/jumper/blob/main/deploy/README.md for prerequisites. | | Project guide https://github.com/KingKongRobotics/jumper/blob/main/docs/PROJECT GUIDE.md | Setup, current capabilities and further documentation. | Training builds on mjlab https://github.com/mujocolab/mjlab , rsl rl https://github.com/leggedrobotics/rsl rl , MuJoCo https://github.com/google-deepmind/mujoco and MuJoCo Warp https://github.com/google-deepmind/mujoco warp . Example appearance and scene images come from jumper-design; image sources https://github.com/KingKongRobotics/jumper/blob/main/docs/media/DESIGN SOURCES.md and third-party notices https://github.com/KingKongRobotics/jumper/blob/main/NOTICE record attribution. Copyright 2026 KingKong Robotics. Maintainer-owned project materials are licensed under Apache-2.0. See LICENSE https://github.com/KingKongRobotics/jumper/blob/main/LICENSE , NOTICE https://github.com/KingKongRobotics/jumper/blob/main/NOTICE , and licensing details https://github.com/KingKongRobotics/jumper/blob/main/docs/PROJECT GUIDE.md license . Third-party materials remain under their respective terms, and generated outputs do not automatically inherit this repository's license.