---
title: Attach Worker Domain
---
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[API Reference](https://developers.cloudflare.com/api)
[Workers](https://developers.cloudflare.com/api/resources/workers)
[Domains](https://developers.cloudflare.com/api/resources/workers/subresources/domains)
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# Attach Worker Domain
PUT/accounts/{account\_id}/workers/domains
Attaches a domain that routes traffic to a Worker.
##### Security
API Token
The preferred authorization scheme for interacting with the Cloudflare API. Create a token.
**Example:**Authorization: Bearer Sn3lZJTBX6kkg7OdcBUAxOO963GEIyGQqnFTOFYY
API Email + API Key
The previous authorization scheme for interacting with the Cloudflare API, used in conjunction with a Global API key.
**Example:**X-Auth-Email: user@example.com
The previous authorization scheme for interacting with the Cloudflare API. When possible, use API tokens instead of Global API keys.
**Example:**X-Auth-Key: 144c9defac04969c7bfad8efaa8ea194
##### Accepted Permissions (at least one required)
`Workers Scripts Write`
##### P ath ParametersExpand Collapse
account\_id: string
Identifier.
maxLength32
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(params)%20default%20%3E%20(param)%20account_id%20%3E%20(schema)>)
##### Body ParametersJSONExpand Collapse
hostname: string
Hostname of the domain. Can be either the zone apex or a subdomain of the zone. Requests to this hostname will be routed to the configured Worker.
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(params)%200%20%3E%20(param)%20hostname%20%3E%20(schema)>)
service: string
Name of the Worker associated with the domain. Requests to the configured hostname will be routed to this Worker.
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(params)%200%20%3E%20(param)%20service%20%3E%20(schema)>)
zone\_id: optional string
ID of the zone containing the domain hostname.
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(params)%200%20%3E%20(param)%20zone_id%20%3E%20(schema)>)
zone\_name: optional string
Name of the zone containing the domain hostname.
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(params)%200%20%3E%20(param)%20zone_name%20%3E%20(schema)>)
##### ReturnsExpand Collapse
errors: array of object {code, message, documentation\_url, source }
code: number
minimum1000
Link to this property
message: string
Link to this property
documentation\_url: optional string
Link to this property
source: optional object {pointer }
pointer: optional string
Link to this property
Link to this property
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(network%20schema)%20%3E%20(property)%20errors>)
messages: array of object {code, message, documentation\_url, source }
code: number
minimum1000
Link to this property
message: string
Link to this property
documentation\_url: optional string
Link to this property
source: optional object {pointer }
pointer: optional string
Link to this property
Link to this property
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(network%20schema)%20%3E%20(property)%20messages>)
result: object {id, cert\_id, environment, 4 more }
id: string
Immutable ID of the domain.
Link to this property
cert\_id: string
ID of the TLS certificate issued for the domain.
formatuuid
Link to this property
Deprecatedenvironment: string
Worker environment associated with the domain.
Link to this property
hostname: string
Hostname of the domain. Can be either the zone apex or a subdomain of the zone. Requests to this hostname will be routed to the configured Worker.
Link to this property
service: string
Name of the Worker associated with the domain. Requests to the configured hostname will be routed to this Worker.
Link to this property
zone\_id: string
ID of the zone containing the domain hostname.
Link to this property
zone\_name: string
Name of the zone containing the domain hostname.
Link to this property
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(network%20schema)%20%3E%20(property)%20result>)
success: true
Whether the API call was successful.
[Link to this property](<#(resource)%20workers.domains%20%3E%20(method)%20update%20%3E%20(network%20schema)%20%3E%20(property)%20success>)
### Attach Worker Domain
HTTP
HTTPTypeScriptPythonGoTerraform
```
curl https://api.cloudflare.com/client/v4/accounts/$ACCOUNT_ID/workers/domains \
-X PUT \
-H 'Content-Type: application/json' \
-H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
-d '{
"hostname": "app.example.com",
"service": "my-worker",
"zone_id": "593c9c94de529bbbfaac7c53ced0447d",
"zone_name": "example.com"
}'
```
200 example
```
{
"errors": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"messages": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"result": {
"id": "dbe10b4bc17c295377eabd600e1787fd",
"cert_id": "9fdf92c8-64c2-4a3d-b1af-e15304961145",
"environment": "production",
"hostname": "app.example.com",
"service": "my-worker",
"zone_id": "593c9c94de529bbbfaac7c53ced0447d",
"zone_name": "example.com"
},
"success": true
}
```
##### Returns Examples
200 example
```
{
"errors": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"messages": [
{
"code": 1000,
"message": "message",
"documentation_url": "documentation_url",
"source": {
"pointer": "pointer"
}
}
],
"result": {
"id": "dbe10b4bc17c295377eabd600e1787fd",
"cert_id": "9fdf92c8-64c2-4a3d-b1af-e15304961145",
"environment": "production",
"hostname": "app.example.com",
"service": "my-worker",
"zone_id": "593c9c94de529bbbfaac7c53ced0447d",
"zone_name": "example.com"
},
"success": true
}
```