> For the complete documentation index, see [llms.txt](https://docs.avoautomation.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.avoautomation.com/avo-assure/actions/web-service-operations/web-service-list/get-header-1.md). # Get header This is a pre-built Action located under the **WebService List** Element. The functionality of this action in Avo Assure is to fetch one or more response header key values after executing a webservice request and store the result in a dynamic variable. ## **Syntax** **Input Value**: `
` {% hint style="info" %} **Note:** * If you do not enter a value in the **Input** **Value** column, the action saves the entire response header in the output variable. * If you provide a specific header key, the action retrieves only the value of that key. * You can fetch multiple header values by separating the header keys with a semicolon (;). * Header keys are case-sensitive, so you must provide the correct key name. {% endhint %} | Argument | Description | | ----------------------------------- | ----------------------------------------------------- | |

\


(Required)

| Provide the specific key name of the response header. | **Output Value**: `;(Optional)` | Argument | Description | | ----------------------------------------- | -------------------------------------------------------------------------- | |

\
(Required)

| This dynamic variable holds the header or its value. | |

\
(Optional)

| This dynamic variable holds the execution status as **True** or **False**. | ### **Example 1: Retrieving a Specific Response Header** In this example, we explain how to fetch a single response header value from an executed WebService request. * **Action**: Get header * **Input Value**: StatusCode * The input value (**StatusCode**) specifies the response header key to retrieve from the WebService response. * **Output Value**: {S\_Code} * The first output variable (**{S\_Code}**) stores the retrieved header value as (**200**). * If a second output variable is provided, the action returns the status as **True** or **False**: * **True**: If the specified header is retrieved successfully. * **False**: If the header does not exist in the response. * **Logical Explanation**: The **Get Header** action takes the value from the **Input Value** column (**StatusCode**) and searches for the matching header in the executed WebService response. After retrieving the header value (**200**), the action stores it in the **{S\_Code}** variable.
### **Example 2: Retrieving Multiple Response Header Values** In this example, we explain how to fetch multiple response header values from an executed WebService request. * **Action**: Get header * **Input Value**: StatusCode;Content-Type;Content-Length * The first argument (**StatusCode**) specifies the first response header key to retrieve. * The second argument (**Content-Type**) specifies the second response header key to retrieve. * The third argument (**Content-Length**) specifies the third response header key to retrieve. * **Output Value**: {Values} * The output variable (**{Values}**) stores all retrieved header values in an array format (**\[200**, **'application/json'**, **'91902']**). * If a second output variable is provided, the action returns the status as **True** or **False**: * **True:** If all specified headers are retrieved successfully. * **False:** If one or more headers do not exist in the response. {% hint style="info" %} **Note**: * To fetch a specific value from the list, use the [**Display Variable Value**](/avo-assure/actions/generic/variable-operations/display-variable-value.md) action and provide the input variable as **{Value\[0]}**. * To fetch multiple values from the list, separate the variables with a semicolon (;). For example: **{Value\[0]};{Value\[1]}**. {% endhint %} * **Logical Explanation**: The **Get header** action takes the values from the **Input Value** column (**StatusCode;Content-Type;Content-Length**) and retrieves the matching headers from the executed WebService response. The action stores all retrieved header values in the **{Values}** array variable as (**\[200**, **'application/json'**, **'91902']**).
* **To fetch a single header value from the give header keys, refer to the screenshot below.**
* **To fetch multiple header values from the give header keys, refer to the screenshot below.**
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