Codex plugin

The Railway plugin for OpenAI Codex packages the use-railway skill with Railway's hosted MCP server. It connects to your Railway account through OAuth and works from supported Codex plugin surfaces.

Install the published plugin

ChatGPT and Codex use the same public plugin directory, so the Railway listing is available from either product.

Open the Railway plugin listing from Codex.
Click the plus button to install the plugin.
Connect your Railway account when prompted.
Start a new task or session to use the plugin.

In Codex CLI, enter /plugins to open the plugin browser, find Railway, and install it from the public directory.

Install from the source repository

Add the Railway marketplace when you want to use the version published directly from the source repository:

codex plugin marketplace add railwayapp/railway-skills

Start Codex, enter /plugins, select the Railway marketplace, and install the Railway plugin. Start a new session after installation so Codex can load the plugin's skills and tools.

What's included

The Codex plugin installs these components:

The use-railway skill provides Railway-specific workflows for setup, deployment, configuration, and operations.
The hosted Railway MCP server provides authenticated access to Railway projects and infrastructure.

View the source

The Railway Codex plugin is open-source in the Railway skills repository.