Railway Domain

# Railway Domain Management Add, view, or remove domains for Railway services. ## When to Use - User asks to "add a domain", "generate a domain", "get a URL" - User wants to add a custom domain - User asks "what's the URL for my service" - User wants to remove a domain ## Add Railway Domain Generate a railway-provided domain (max 1 per service): ```bash railway domain --json ``` For a specific service: ```bash railway domain --json --service backend ``` ### Response Returns the generated domain URL. Service must have a deployment. ## Add Custom Domain ```bash railway domain example.com --json ``` ### Response Returns required DNS records: ```json { "domain": "example.com", "dnsRecords": [ { "type": "CNAME", "host": "@", "value": "..." } ] } ``` Tell user to add these records to their DNS provider. ## Read Current Domains Use railway-environment skill to see configured domains, or query directly: ```graphql query domains($envId: String!) { environment(id: $envId) { config(decryptVariables: false) } } ``` Domains are in `config.services..networking`: - `serviceDomains` - Railway-provided domains - `customDomains` - User-provided domains ## Remove Domain Use railway-environment skill to remove domains: ### Remove custom domain ```json { "services": { "": { "networking": { "customDomains": { "": null } } } } } ``` ### Remove railway domain ```json { "services": { "": { "networking": { "serviceDomains": { "": null } } } } } ``` Then use railway-environment skill to apply and commit the change. ## CLI Options | Flag | Description | |------|-------------| | `[DOMAIN]` | Custom domain to add (omit for railway domain) | | `-p, --port ` | Port to connect | | `-s, --service ` | Target service (defaults to linked) | | `--json` | JSON output | ## Composability - **Read domains**: Use railway-environment skill - **Remove domains**: Use railway-environment skill - **Apply removal**: Use railway-environment skill - **Check service**: Use railway-service skill ## Error Handling ### No Service Linked ``` No service linked. Use --service flag or run `railway service` to select one. ``` ### Domain Already Exists ``` Service already has a railway-provided domain. Maximum 1 per service. ``` ### No Deployment ``` Service has no deployment. Deploy first with `railway up`. ``` ### Invalid Domain ``` Invalid domain format. Use a valid domain like "example.com" or "api.example.com". ```