Robosynx is a free AI-powered robotics developer platform built for engineers, researchers, and hobbyists working with robot simulation frameworks. Whether you are developing autonomous mobile robots, manipulator arms, legged robots, or humanoid systems, Robosynx provides four core tools: an AI robot file generator, a lossless format converter, a comprehensive physics validator, and an interactive 3D robot viewer. Every tool runs entirely in your browser with no account, no software installation, and no usage fees.
The AI robot generator accepts plain-English robot descriptions and produces complete, simulation-ready robot description files in URDF, SDF, or MJCF format. Powered by Claude AI, the generator computes joint limits, inertial tensors, link masses, collision geometries, and kinematic chain relationships automatically. The output files are compatible with all major robotics simulation frameworks — NVIDIA Isaac Sim, Isaac Lab, MuJoCo, Gazebo Classic, Gazebo Harmonic, and ROS2. Generate a 6-DOF manipulator, a 4-wheeled differential-drive robot, or a custom articulated platform in seconds. No manual XML writing required. Try the AI Robot Generator
Switching between simulation frameworks should not require hours of manual XML editing. The Robosynx format converter transforms robot description files between URDF, SDF, and MJCF while preserving 100% of the original data: mass properties, inertia tensors, joint limits, geometry references, link hierarchy, and the full kinematic chain. Convert URDF to SDF for Gazebo, URDF to MJCF for MuJoCo or Isaac Lab, SDF to URDF for ROS2 toolchains, or any other combination in a single click. Open the Format Converter
Physics errors in robot simulation files cause difficult-to-debug runtime failures: objects exploding in the simulator, joints locking unexpectedly, or simulations running at incorrect speeds. The Robosynx physics validator runs 15+ automated checks on any URDF, SDF, or MJCF robot file, including XML structure validity, link and joint reference integrity, positive-definite inertia tensors, realistic mass distribution, centre-of-mass positioning, and joint limit range sanity. You receive a numeric quality score and a prioritised list of actionable fix suggestions so you can resolve issues before loading your model into Isaac Sim, MuJoCo, or Gazebo. Validate Your Robot File
The WebGL 3D viewer lets you drag and drop any URDF, SDF, MJCF, or STL robot file and instantly inspect it in three dimensions. Use joint sliders to pose articulated structures, orbit and zoom the camera to inspect geometry, and verify collision mesh coverage visually. The viewer is entirely browser-based — no desktop software, ROS installation, or simulator required. It is the fastest way to confirm your robot description file looks correct before running a full simulation. Open the 3D Viewer
Robosynx supports the three most widely used robot description formats. URDF (Unified Robot Description Format) is the standard format for ROS2 and NVIDIA Isaac Sim. SDF (Simulation Description Format) is used by Gazebo Classic and Gazebo Harmonic for richer scene and world descriptions. MJCF (MuJoCo XML Format) is the native format for MuJoCo and NVIDIA Isaac Lab, providing advanced contact dynamics and actuator models. All Robosynx tools generate, convert, and validate files that work out of the box with every supported simulator.
Robosynx includes a free library of robotics engineering guides covering simulation, AI, and developer tooling: