Railway
All agents

Codex + Railway

Codex is OpenAI's lightweight terminal-based coding agent. It can read and write files, execute shell commands, and even browse the web to gather information. With Railway CLI access, Codex can deploy and manage your applications seamlessly.

CLICodex Docs

Quick start

1

Install Codex

Install Codex globally

npm install -g @openai/codex
2

Install Railway CLI

Install Railway CLI and authenticate

npm install -g @railway/cli && railway login
3

Start Codex

Launch Codex in your project

codex
4

Deploy an Express API with Postgres

Codex will scaffold your API, create the database, and deploy. Your API will be live in minutes

Create an Express API and deploy it to Railway with a Postgres database

Environment variables

VariableDescription
OPENAI_API_KEY
Your OpenAI API key

Example prompts

“Deploy this Express app to Railway”

“Add a Redis cache to my project”

“Check deployment logs and fix the startup error”

“Set up environment variables for DATABASE_URL and API keys”

“Configure health checks and automatic restarts”

“Add a cron job service that runs every hour”

“Deploy Pocketbase with MinIO storage for a mobile app backend”

“Set up a MongoDB replica set with automatic backups”

“Deploy the Rails 8 template with Postgres, Redis, and Sidekiq workers”

“Create a microservices setup with API gateway, two services, and shared Postgres”

Common workflows

1Deploy a Redis cache

  1. Ask Codex to add Redis to your project
  2. Codex creates the Redis service via CLI
  3. Codex retrieves and sets REDIS_URL variable
  4. Codex updates your application code

2Deploy with Codex

  1. Ask Codex to deploy your project to Railway
  2. Codex runs railway login if needed
  3. Codex initializes and deploys with railway up
  4. Codex monitors deployment with railway logs

3Environment setup

  1. Ask Codex to configure environment variables
  2. Codex uses railway variables to set values
  3. Codex triggers redeploy with railway up

4Debug deployment issues

  1. Ask Codex to check recent deployment logs
  2. Codex runs railway logs to fetch errors
  3. Codex analyzes the error output
  4. Codex suggests and implements fixes

5Project status check

  1. Ask Codex to check your Railway project status
  2. Codex runs railway status for overview
  3. Codex checks railway logs for recent activity
  4. Codex reports any issues found

Tips for success

  • Ensure Railway CLI is installed and in PATH
  • Use railway link to connect to existing projects
  • Codex can read deployment logs to debug issues

Frequently asked questions

How do I deploy my first project to Railway with Codex?

Run railway login to authenticate, then ask Codex to run railway init to create a project and railway up to deploy. Codex will handle the entire flow.

Can Codex add databases to my Railway project?

Yes! Ask Codex to add a Postgres, MySQL, or Redis service. It will create the service and configure the connection string automatically.

How do I check why my Railway deployment failed with Codex?

Ask Codex to run railway logs to fetch deployment logs. It will analyze the errors and suggest fixes you can apply immediately.

Troubleshooting

Issue:

Codex can't execute Railway commands

Solution:

Make sure Railway CLI is installed and you're logged in with railway login.

Issue:

Deployment fails with build errors

Solution:

Check the build logs with railway logs --build. Ensure your project has the correct start command in railway.toml or package.json.

Issue:

Codex times out during deployment

Solution:

Use railway up --detach to run deployments in the background. Check status with railway status.

Community resources

Central StationDiscordCodex GitHub

Ready to deploy with Codex?

Get started in minutes. Railway handles the infrastructure.

Start a new projectRead the docs