# User Agent Blocking rules
## Create a User Agent Blocking rule
**POST** `/zones/{zone_id}/firewall/ua_rules`
Creates a new User Agent Blocking rule in a zone.
### Responses
#### 200 Create a User Agent Blocking rule response
> Data is at `body["result"]`
```json
null
```
#### 4XX Create a User Agent Blocking rule response failure
```json
{
"errors": [
{
"code": "*integer*",
"message": "*string*"
}
],
"messages": [
{
"code": "*integer*",
"message": "*string*"
}
],
"result": {},
"success": "*boolean*"
}
```
## List User Agent Blocking rules
**GET** `/zones/{zone_id}/firewall/ua_rules`
Fetches User Agent Blocking rules in a zone. You can filter the results using several optional parameters.
### Responses
#### 200 List User Agent Blocking rules response
> Data is at `body["result"]`
```json
[
{}
]
```
#### 4XX List User Agent Blocking rules response failure
```json
{
"errors": [
{
"code": "*integer*",
"message": "*string*"
}
],
"messages": [
{
"code": "*integer*",
"message": "*string*"
}
],
"result": {},
"result_info": {
"count": "*number*",
"page": "*number*",
"per_page": "*number*",
"total_count": "*number*"
},
"success": "*boolean*"
}
```
## Update a User Agent Blocking rule
**PUT** `/zones/{zone_id}/firewall/ua_rules/{ua_rule_id}`
Updates an existing User Agent Blocking rule.
### Responses
#### 200 Update a User Agent Blocking rule response
> Data is at `body["result"]`
```json
null
```
#### 4XX Update a User Agent Blocking rule response failure
```json
{
"errors": [
{
"code": "*integer*",
"message": "*string*"
}
],
"messages": [
{
"code": "*integer*",
"message": "*string*"
}
],
"result": {},
"success": "*boolean*"
}
```
## Get a User Agent Blocking rule
**GET** `/zones/{zone_id}/firewall/ua_rules/{ua_rule_id}`
Fetches the details of a User Agent Blocking rule.
### Responses
#### 200 Get a User Agent Blocking rule response
> Data is at `body["result"]`
```json
null
```
#### 4XX Get a User Agent Blocking rule response failure
```json
{
"errors": [
{
"code": "*integer*",
"message": "*string*"
}
],
"messages": [
{
"code": "*integer*",
"message": "*string*"
}
],
"result": {},
"success": "*boolean*"
}
```
## Delete a User Agent Blocking rule
**DELETE** `/zones/{zone_id}/firewall/ua_rules/{ua_rule_id}`
Deletes an existing User Agent Blocking rule.
### Responses
#### 200 Delete a User Agent Blocking rule response
> Data is at `body["result"]`
```json
null
```
#### 4XX Delete a User Agent Blocking rule response failure
```json
{
"errors": [
{
"code": "*integer*",
"message": "*string*"
}
],
"messages": [
{
"code": "*integer*",
"message": "*string*"
}
],
"result": {},
"success": "*boolean*"
}
```