Setting Up Reteno Skills for OpenAI Codex

The Reteno skills for OpenAI Codex connect Codex directly to your Reteno account through an MCP connection. This article walks you through the installation and how to verify the setup.

Installation

Step 1. Create a project folder

Choose your project source:

• Codex desktop app: create or select a local folder on your computer.
• Codex web: connect a GitHub repository.

Step 2. Connect your Reteno account

Go to Settings → MCP servers → Add server.

Select Streamable HTTP as the type, enter https://mcp.reteno.com as the URL, and set any name you prefer.

After saving, authenticate the connection.

A Reteno login page will open in the browser — sign in.

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Important

After authentication, return to Codex, start a new thread in your project, and select Full access under the chat box.

Step 3. Install the skills

Open Skills and use the Skill installer to install the Reteno skills from the Reteno GitHub repository.

In the Skill installer, provide the following URL:

• https://github.com/reteno-com/codex-skills

Codex detects installed skills automatically and can use them when relevant. If a skill is not available immediately, refresh the project or restart Codex.

Verify the Connection

To confirm the setup is working, ask the agent:

• Are any MCP servers connected?

If the agent confirms the Reteno MCP server is connected, you're ready to go.