3D OS is Scenario’s collection of agent skills for 3D production workflows. Its repository describes specialist workflows for animation, art, modeling, look development and lighting, worlds, and pipeline tasks, alongside expert tools for digital-content-creation applications and game engines. The skills can guide agents through tasks such as generating and handling 3D assets, preparing models for use in engines, and working with 3D worlds. The repository provides installation instructions and describes connecting the Scenario skills to the Scenario MCP server.