API parameter reference
To set an HTTP response header, overwriting any headers with the same name, use the following parameters in the action_parameters field:
- 
operation: set
- 
Include one of the following parameters to define a static or dynamic value: - value: Specifies a static value for the HTTP response header.
- expression: Specifies the expression that defines a value for the HTTP response header.
 
To add an HTTP response header, keeping any existing headers with the same name, use the following parameters in the action_parameters field:
- operation: add
- value: Specifies a static value for the HTTP response header.
To remove an HTTP response header, set the following parameter in the action_parameters field:
- operation: remove
The full syntax of the action_parameters field to define a static HTTP response header value is the following:
"action_parameters": {  "headers": {    "<HEADER_NAME>": {      "operation": "<set|add>",      "value": "<URI_PATH_VALUE>"    }  }}The full syntax of the action_parameters field to define a dynamic HTTP response header value using an expression is the following:
"action_parameters": {  "headers": {    "<HEADER_NAME>": {      "operation": "set",      "expression": "<EXPRESSION>"    }  }}The full syntax of the action_parameters field to remove an HTTP response header is the following:
"action_parameters": {  "headers": {    "<HEADER_NAME>": {      "operation": "remove"    }  }}The same rule can modify different HTTP response headers using different operations. For example, a single rule can set the value of a header and remove a different header. The syntax of such a rule could be the following:
"action_parameters": {  "headers": {    "<HEADER_NAME_1>": {      "operation": "set",      "value": "<HEADER_VALUE_1>"    },    "<HEADER_NAME_2>": {      "operation": "remove"    }  }}