Use Railway

Before any mutation, verify context:

command -v railway                # CLI installed
railway whoami --json             # authenticated
railway --version                 # check CLI version
railway status --json             # linked project/environment/service

If the CLI is missing, guide the user to install it.

bash <(curl -fsSL cli.new) # Shell script (macOS, Linux, Windows via WSL)
brew install railway # Homebrew (macOS)
npm i -g @railway/cli # npm (macOS, Linux, Windows). Requires Node.js version 16 or higher.

If not authenticated, run railway login. If not linked, run railway link --project <id-or-name>.

If a command is not recognized (for example, railway environment edit), the CLI may be outdated. Upgrade with:

railway upgrade

Common quick operations

These are frequent enough to handle without loading a reference:

railway status --json                                    # current context
railway whoami --json                                    # auth and workspace info
railway project list --json                              # list projects
railway service status --all --json                      # all services in current context
railway variable list --service <svc> --json             # list variables
railway variable set KEY=value --service <svc>           # set a variable
railway logs --service <svc> --lines 200 --json          # recent logs
railway up --detach -m "<summary>"                       # deploy current directory

Routing

For anything beyond quick operations, load the reference that matches the user's intent. Load only what you need, one reference is usually enough, two at most.

If the request spans two areas (for example, "deploy and then check if it's healthy"), load both references and compose one response.

Execution rules

1. Prefer Railway CLI. Fall back to scripts/railway-api.sh for operations the CLI doesn't expose.
2. Use --json output where available for reliable parsing.
3. Resolve context before mutation. Know which project, environment, and service you're acting on.
4. For destructive actions (delete service, remove deployment, drop database), confirm intent and state impact before executing.
5. After mutations, verify the result with a read-back command.

Composition patterns

Multi-step workflows follow natural chains:

• First deploy: setup (create project + service), configure (set variables and source), deploy, operate (verify healthy)
• Fix a failure: operate (triage logs), configure (fix config/variables), deploy (redeploy), operate (verify recovery)
• Add a domain: configure (add domain + set port), operate (verify DNS and service health)
• Docs to action: request (fetch docs answer), route to the relevant operational reference

When composing, return one unified response covering all steps. Don't ask the user to invoke each step separately.

Setup decision flow

When the user wants to create or deploy something, determine the right action from current context:

1. Run railway status --json in the current directory.
2. If linked: add a service to the existing project (railway add --service <name>). Do not create a new project unless the user explicitly says "new project" or "separate project".
3. If not linked: check the parent directory (cd .. && railway status --json).
   • Parent linked: this is likely a monorepo sub-app. Add a service and set rootDirectory to the sub-app path.
   • Parent not linked: run railway list --json and look for a project matching the directory name.
     • Match found: link to it (railway link --project <name>).
     • No match: create a new project (railway init --name <name>).
4. When multiple workspaces exist, match by name from railway whoami --json.

Naming heuristic: app names like "flappy-bird" or "my-api" are service names, not project names. Use the directory or repo name for the project.

Response format

For all operational responses, return:

1. What was done (action and scope).
2. The result (IDs, status, key output).
3. What to do next (or confirmation that the task is complete).

Keep output concise. Include command evidence only when it helps the user understand what happened.