Create Variable - Markifact

Creates a user-defined variable in a Google Tag Manager workspace from a raw Variable resource payload. Reference it in tags as {{variable name}}; version and publish to take it live.


App	Google Tag Manager
Operation ID	`gtm_create_variable`
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.
`variable_payload`	object or string	Yes	-	Full Variable resource (object or JSON string) matching the Google Tag Manager API v2 Variable spec. Must include name and type (e.g. v for data layer variable, c for constant, jsm for custom JavaScript); settings go in parameter. You can copy a variable from gtm_list_variables and edit it (read-only fields are stripped automatically). Example data layer variable: {“name”: “DL - purchase value”, “type”: “v”, “parameter”: [{“type”: “integer”, “key”: “dataLayerVersion”, “value”: “2”}, {“type”: “template”, “key”: “name”, “value”: “ecommerce.value”}]}

Output

Type: Dict Returns the created variable as provided by the Tag Manager API, including its variableId.