> ## Documentation Index
> Fetch the complete documentation index at: https://docs.markifact.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Enable Built In Variables

> Enables built-in variables (e.g

Enables built-in variables (e.g. pageUrl, clickClasses, event) in a Google Tag Manager workspace so tags and triggers can reference them.

|                       |                                 |
| --------------------- | ------------------------------- |
| **App**               | Google Tag Manager              |
| **Operation ID**      | `gtm_enable_built_in_variables` |
| **Type**              | Action                          |
| **Connection**        | `gtm` (required)                |
| **Credits per run**   | 1                               |
| **Agent / MCP tool**  | Yes                             |
| **Requires approval** | Yes (write operation)           |

## Inputs

| Field       | Type                                                    | Required | Default | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| ----------- | ------------------------------------------------------- | -------- | ------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `account`   | DynamicAccount                                          | Yes      | -       | Select the Google Tag Manager account.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| `container` | DynamicAccount                                          | Yes      | -       | Select the container.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| `workspace` | DynamicAccount                                          | Yes      | -       | Select the workspace.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| `types`     | array of string (also accepts a comma-separated string) | Yes      | -       | Built-in variable types to enable, as a list or comma-separated text, using the Google Tag Manager API v2 BuiltInVariable type enum. Common values: pageUrl, pageHostname, pagePath, referrer, event, clickElement, clickClasses, clickId, clickTarget, clickUrl, clickText, formElement, formClasses, formId, formUrl, formText, errorMessage, errorUrl, containerId, containerVersion, randomNumber, htmlId, environmentName, scrollDepthThreshold, videoTitle, videoUrl. Built-in variables must be enabled before tags or triggers can reference them (e.g. \{\{Page URL}}). |

## Output

**Type**: `Dict`

Returns the enabled built-in variables as provided by the Tag Manager API.