This tool provides a local Model Context Protocol (MCP) server that allows AI models, specifically designed for clients like Claude Desktop, to programmatically interact with Google Tag Manager (GTM). It streamlines the process of managing web analytics and marketing tags by enabling AI to automate tasks such as listing accounts and containers, managing tags, triggers, and variables, and publishing container versions. Users set up their own Google Cloud OAuth credentials to ensure secure, private, and controlled access to their GTM configurations.