> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.ada.cx/docs/handoffs/handoff-management/blocks/set-variable-block/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.ada.cx/_mcp/server.

# Set Variable block

## Overview

The Set Variable block automatically defines variables in your handoff content that you can use in other blocks, without your customers ever knowing it's happening behind the scenes.

## Configuration

Define variables automatically in your handoff content for use in other blocks.

**To configure the Set Variable block:**

1. Under **Variable**, select a variable to save the value in, or click **Make New Variable** to create a new one.

   > **Note**
   >
   > You can't select metavariables, which your AI Agent sets automatically, or variables that contain list responses.

   If this variable already has a value assigned to it at this point in the conversation, this block will overwrite the old value. If you created a new variable, follow these steps to finish creating it:

   1. If you created a new variable, enter a **Name** for it that describes the data it will contain.
   2. Under **Availability**, select either **Only this Answer** to limit the variable's use to the current handoff content, or **All Answers** to make the variable available throughout your AI Agent.
   3. Under **Type**, select the type of information the variable should store, so your AI Agent can help validate customer responses to fit it.
   4. Click **Save**. Your AI Agent saves your new variable.

2. Under **Content**, beside the dropdown list, click the **More Options** icon ![](/_fern-img/d0066485566bfdcf05498372e70c0cc1fb3d3a95f2091f36786ad737fbe72176.webp) and select a variable type:

   * **Basic**: Save a static text value that you add manually into the variable.

   * **Variable**: Save the content of another existing variable into this variable. For example, you can save the value of an existing metavariable into this variable.

     > **Note**
     >
     > For security reasons, you can't save a variable with the value of an authentication variable.

   * **True/False**: Save either a positive or negative response in the variable.

   * **Null**: Clear any previously set values from the variable.

   ![](/_fern-img/1c2d5e48da6b704b749115efcdebfc89a9bffe3c005729a0452ec8092e162de4.webp)

3. Under **Content**, enter or select a value to save in the variable. The options you have depend on the variable type you selected, or are absent if you selected Null.

4. If required, click **Add new variable** to add additional variables to set at the same time.

   If the block contains more than five variables, it will be collapsed by default the next time you view the handoff content, so you can scroll through the handoff content's content more easily. To expand the block and view all of the variables, click the arrow icon next to the trash can icon in the upper-right corner of the block.

---

Have any questions? Contact your Ada team, or email us at [](mailto:help@ada.cx?subject=Help%20Docs%20inquiry).