domain_create
Create custom domains for Railway services to configure HTTPS endpoints and set up public access points.
Instructions
[API] Create a new domain for a service
⚡️ Best for: ✓ Setting up custom domains ✓ Configuring service endpoints ✓ Adding HTTPS endpoints
⚠️ Not for: × TCP proxy setup (use tcp_proxy_create) × Internal service communication
→ Prerequisites: service_list, domain_check
→ Alternatives: tcp_proxy_create
→ Next steps: domain_update
→ Related: service_info, domain_list
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| environmentId | Yes | ID of the environment | |
| serviceId | Yes | ID of the service | |
| domain | No | Custom domain name (optional, as railway will generate one for you and is generally better to leave it up to railway to generate one. There's usually no need to specify this and there are no use cases for overriding it.) | |
| suffix | No | Suffix for the domain (optional, railway will generate one for you and is generally better to leave it up to railway to generate one.) | |
| targetPort | No | Target port for the domain (optional, as railway will use the default port for the service and detect it automatically.) |