Get Started with Codex CLI

This guide will walk you through the setup process for getting started with Codex.

Check your environment

Open a command-line prompt, Windows Terminal if you have it installed, or else Command Prompt or Windows Powershell from the Start menu.
Setup uno.check by installing or updating the tool with:
```
dotnet tool update -g uno.check
```
Run the tool from the command prompt with the following command:
```
uno-check
```
You can optionally add the --target desktop --target web (or ios, android, windows) parameters based on your intended development platforms.
Follow the instructions indicated by the tool.

You can find additional information about uno-check here.

Open a Terminal.
Setup uno.check by installing or updating the tool with:
```
dotnet tool update -g uno.check
```
Run the tool from the command prompt with the following command:
```
uno-check
```
If the above command fails, use the following:
```
~/.dotnet/tools/uno-check
```
You can optionally add the --target desktop --target web (or ios, android, windows) parameters based on your intended target platforms.
Follow the instructions indicated by the tool

You can find additional information about uno-check here.

Open a Terminal
If dotnet --version returns command not found:
- Follow the official directions for installing .NET.
  
  Important
  
  If you are using Ubuntu 24.04 or earlier, use the Microsoft feed to install .NET. On later versions, you may install .NET directly from Ubuntu's official feed. In any case, you may refer to the directions from Microsoft on installing .NET on Ubuntu and make sure to select your Ubuntu version.
Then, setup uno.check by installing or updating the tool with:
```
dotnet tool update -g uno.check
```
Run the tool from the command prompt with the following command:
```
uno-check
```
If the above command fails, use the following:
```
~/.dotnet/tools/uno-check
```
You can optionally add the --target desktop --target web (or ios, android, windows) parameters based on your intended development platforms.
Follow the instructions indicated by the tool

You can find additional information about uno-check here.

codex mcp add "uno" --url "https://mcp.platform.uno/v1"
codex mcp add "uno-app" -- dotnet dnx -y uno.devserver --mcp-app

Start Codex CLI and type the following:
```
/mcp
```
This will show the Uno Platform tools available to the agent.

Now that you are set up, let's create your first app.