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mcp-gtm

by jamestomasino
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TypeScript
Local

mcp-gtm

CI License: MIT npm version

An MCP (Model Context Protocol) server that lets LLMs interact with Google Tag Manager through exported JSON container files. Zero auth setup, fully offline.

Quick Start

npm install
npm run dev

Or configure in your MCP client:

{
  "mcpServers": {
    "gtm": {
      "command": "npx",
      "args": ["tsx", "/path/to/mcp-gtm/src/index.ts"],
      "env": {
        "GTM_CONTAINER_FILE": "/path/to/your-container.json"
      }
    }
  }
}

Related MCP server: Google Tag Manager MCP Server

Tools (47 total)

Container

Tool

Description

gtm_load_container

Load a GTM container JSON file

gtm_get_container_info

Get container metadata

gtm_get_container_state

Get summary counts

Tags

Tool

Description

gtm_list_tags

List all tags

gtm_get_tag

Get tag by ID or name

gtm_create_tag

Create a new tag

gtm_update_tag

Update an existing tag

gtm_delete_tag

Delete a tag

gtm_find_tags_by_type

Find tags by type (e.g. gaawe)

Triggers

Tool

Description

gtm_list_triggers

List all triggers

gtm_get_trigger

Get trigger by ID or name

gtm_create_trigger

Create a new trigger

gtm_update_trigger

Update a trigger

gtm_delete_trigger

Delete a trigger

Variables

Tool

Description

gtm_list_variables

List user-defined variables

gtm_get_variable

Get variable details

gtm_create_variable

Create a variable

gtm_update_variable

Update a variable

gtm_delete_variable

Delete a variable

gtm_list_builtin_variables

List built-in variables

Folders

Tool

Description

gtm_list_folders

List folders

gtm_get_folder

Get folder details

gtm_create_folder

Create a new folder

gtm_delete_folder

Delete a folder

gtm_move_tag_to_folder

Move a tag to/from a folder

gtm_move_trigger_to_folder

Move a trigger to/from a folder

gtm_move_variable_to_folder

Move a variable to/from a folder

Analysis

Tool

Description

gtm_get_tag_dependencies

Show tag trigger dependencies

gtm_find_unused_entities

Find unused tags/triggers/variables

gtm_find_orphaned_triggers

Find triggers not used by any tag

gtm_validate_container

Run full Zod validation

Lifecycle

Tool

Description

gtm_analyze_tag_firing_order

Deterministic firing order, sequencing deps, conflicts

gtm_analyze_consent_setup

Consent pattern detection, issue classification, recommendations

gtm_get_tag_lifecycle

Per-tag lifecycle phase, consent relationships, issues

Server-Side GTM

Tool

Description

gtm_list_zones

List all zones

gtm_get_zone

Get zone details

gtm_list_clients

List all clients

gtm_get_client

Get client details

gtm_list_transformations

List all transformations

gtm_get_transformation

Get transformation details

gtm_list_custom_templates

List all custom templates

gtm_get_custom_template

Get custom template details

Export

Tool

Description

gtm_export_container

Export container state to JSON

gtm_diff_containers

Compare two container files

Search

Tool

Description

gtm_search

Full-text search across entity names and notes

Undo/Redo

Tool

Description

gtm_undo

Undo the last mutation

gtm_redo

Redo the last undone mutation

Resources (4 total)

Read-only MCP resources for container state snapshots:

Resource

URI

Description

container_state

gtm://container/state

Entity counts and metadata

container_tags

gtm://container/tags

Full tag listing

container_triggers

gtm://container/triggers

Full trigger listing

container_variables

gtm://container/variables

Full variable listing

Prompts (5 total)

Pre-built prompt templates for common workflows:

Prompt

Description

inspect_container

List all entities with resolved names

audit_container

Find unused/orphaned/disabled entities

debug_tag

Debug why a specific tag isn't firing

compare_containers

Compare two container files

audit_consent

Audit consent setup, firing order, and tag lifecycle

Why JSON Files?

  • Zero auth (no GCP project, no service account)

  • Fully offline and testable

  • Diffable and version-controllable

  • Import back into GTM with one click

Configuration

Environment Variable

Description

GTM_CONTAINER_FILE

Path to a GTM export JSON file. Auto-loaded on startup.

GTM_READ_ONLY

Set to any value to disable all write tools (create, update, delete, move, export). Only read and analysis tools will be available.

Development

npm test        # Run tests
npm run dev     # Run server
npm run build   # TypeScript check
npm run lint    # Biome lint
npm run format  # Biome format

License

MIT

This server cannot be installed

A
license - permissive license
-
quality - not tested
B
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

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