Player not loading? Watch on YouTube
This tutorial walks through connecting Codex to the Unity editor with Unity MCP. The speaker introduces the workflow with a red cube they say was created through Codex, then covers project creation, package installation and a command-line test. It is a coding assistant setup for controlling Unity through an MCP server; the transcript does not establish that the model runs locally or works offline.
The setup begins with a new Unity project. The presenter adds a GitHub URL through Unity's package installation interface, then opens the MCP for Unity setup window. The supplied metadata links to CoplayDev's unity-mcp repository. The setup identifies Python and uv as requirements, but gives no specific versions or hardware requirements.
For Codex, the description supplies the command npm install -g @openai/codex. The presenter selects Codex in the Unity MCP setup, installs skills, configures the connection and starts the server. They then launch Codex in a command prompt, sign in through ChatGPT and proceed through sandbox setup.
The final test asks Codex to create a cube in the scene using Unity MCP. The speaker reports that the connection works and returns to Unity to show the result. The walkthrough demonstrates a basic editor action, rather than a broader test of game development tasks. Its closing model reference is unclear in the transcript, so it does not establish a reliable model name or version.
