Google Tag Manager

Access the Google Tag Manager API with managed OAuth authentication. Manage GTM accounts, containers, workspaces, tags, triggers, variables, environments, and container versions.

Quick Start

# List all GTM accounts
python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://api.maton.ai/google-tag-manager/{native-api-path}

Maton proxies requests to tagmanager.googleapis.com and automatically injects your OAuth token.

Authentication

All requests require the Maton API key in the Authorization header:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at maton.ai
2. Go to maton.ai/settings
3. Copy your API key

Connection Management

Manage your Google Tag Manager OAuth connections at https://api.maton.ai.

List Connections

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections?app=google-tag-manager&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python <<'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'google-tag-manager'}).encode()
req = urllib.request.Request('https://api.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "{connection_id}",
    "status": "ACTIVE",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "last_updated_time": "2026-01-31T20:03:32.593153Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "google-tag-manager",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Google Tag Manager connections, specify which one to use with the Maton-Connection header:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Maton-Connection', '{connection_id}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

If you have multiple connections, always include this header to ensure requests go to the intended account.

Security & Permissions

• Access is scoped to the GTM accounts and containers the connected Google account has permissions for.
• All write operations require explicit user approval. Before creating, updating, or deleting tags, triggers, variables, or publishing versions, confirm the target resource and intended effect with the user.
• Publishing a container version makes changes live. Always confirm with the user before publishing.

API Reference

Resource Path Pattern

GTM API v2 uses hierarchical paths:

accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/{resource}/{resourceId}

Accounts

List Accounts

GET /google-tag-manager/tagmanager/v2/accounts

Response:

{
  "account": [
    {
      "path": "accounts/6353461358",
      "accountId": "6353461358",
      "name": "My Company",
      "features": {
        "supportUserPermissions": true,
        "supportMultipleContainers": true
      }
    }
  ]
}

Get Account

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}

Containers

List Containers

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers

Response:

{
  "container": [
    {
      "path": "accounts/6353461358/containers/251407136",
      "accountId": "6353461358",
      "containerId": "251407136",
      "name": "example.com",
      "publicId": "GTM-XXXXXXX",
      "usageContext": ["web"],
      "tagIds": ["GTM-XXXXXXX"],
      "features": {
        "supportTags": true,
        "supportTriggers": true,
        "supportVariables": true,
        "supportVersions": true,
        "supportEnvironments": true,
        "supportWorkspaces": true,
        "supportFolders": true,
        "supportTemplates": true,
        "supportBuiltInVariables": true,
        "supportZones": true
      }
    }
  ]
}

Create Container

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers
Content-Type: application/json

{
  "name": "New Container",
  "usageContext": ["web"]
}

Valid usage contexts: web, android, ios, amp

Delete Container

DELETE /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}

Workspaces

List Workspaces

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces

Response:

{
  "workspace": [
    {
      "path": "accounts/6353461358/containers/251407136/workspaces/2",
      "accountId": "6353461358",
      "containerId": "251407136",
      "workspaceId": "2",
      "name": "Default Workspace"
    }
  ]
}

Create Workspace

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces
Content-Type: application/json

{
  "name": "My Feature Workspace",
  "description": "Working on new tracking features"
}

Get Workspace Status

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/status

Create Version from Workspace

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}:create_version
Content-Type: application/json

{
  "name": "v2.0",
  "notes": "Added new tracking tags"
}

Delete Workspace

DELETE /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}

Tags

List Tags

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/tags

Get Tag

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/tags/{tagId}

Create Tag

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/tags
Content-Type: application/json

{
  "name": "Custom HTML Tag",
  "type": "html",
  "parameter": [
    {
      "type": "template",
      "key": "html",
      "value": "<script>console.log('hello');</script>"
    }
  ],
  "firingTriggerId": ["{triggerId}"]
}

Common tag types: html (Custom HTML), ua (Universal Analytics), gaawc (GA4 Config), gaawe (GA4 Event), gclidw (Conversion Linker), img (Custom Image)

Example:

python <<'EOF'
import urllib.request, os, json
data = json.dumps({
    "name": "GA4 Config Tag",
    "type": "gaawc",
    "parameter": [
        {"type": "template", "key": "measurementId", "value": "G-XXXXXXXXXX"}
    ],
    "firingTriggerId": ["2147479553"]
}).encode()
req = urllib.request.Request('https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/tags', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Update Tag

PUT /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/tags/{tagId}
Content-Type: application/json

{
  "name": "Updated Tag Name",
  "type": "html",
  "parameter": [...],
  "firingTriggerId": ["{triggerId}"],
  "fingerprint": "{current_fingerprint}"
}

Include the current fingerprint value to ensure you're updating the latest version.

Delete Tag

DELETE /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/tags/{tagId}

Triggers

List Triggers

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/triggers

Create Trigger

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/triggers
Content-Type: application/json

{
  "name": "All Pages",
  "type": "pageview"
}

Common trigger types: pageview, domReady, windowLoaded, customEvent, click, linkClick, formSubmit, timer, scrollDepth

Example with filter:

python <<'EOF'
import urllib.request, os, json
data = json.dumps({
    "name": "Click on CTA Button",
    "type": "click",
    "filter": [
        {
            "type": "equals",
            "parameter": [
                {"type": "template", "key": "arg0", "value": "{{Click Classes}}"},
                {"type": "template", "key": "arg1", "value": "cta-button"}
            ]
        }
    ]
}).encode()
req = urllib.request.Request('https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/triggers', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Update Trigger

PUT /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/triggers/{triggerId}
Content-Type: application/json

{
  "name": "Updated Trigger",
  "type": "pageview",
  "fingerprint": "{current_fingerprint}"
}

Delete Trigger

DELETE /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/triggers/{triggerId}

Variables

List Variables

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/variables

Create Variable

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/variables
Content-Type: application/json

{
  "name": "Data Layer Variable",
  "type": "v",
  "parameter": [
    {"type": "integer", "key": "dataLayerVersion", "value": "2"},
    {"type": "template", "key": "name", "value": "myDataLayerVar"}
  ]
}

Common variable types: v (Data Layer), j (JavaScript Variable), jsm (Custom JavaScript), c (Constant), k (Cookie), u (URL), f (DOM Element)

Update Variable

PUT /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/variables/{variableId}
Content-Type: application/json

{
  "name": "Updated Variable",
  "type": "v",
  "parameter": [...],
  "fingerprint": "{current_fingerprint}"
}

Delete Variable

DELETE /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/variables/{variableId}

Built-In Variables

List Built-In Variables

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/workspaces/{workspaceId}/built_in_variables

Response:

{
  "builtInVariable": [
    {
      "path": "accounts/6353461358/containers/251407136/workspaces/2/built_in_variables",
      "type": "pageUrl",
      "name": "Page URL"
    },
    {
      "type": "pageHostname",
      "name": "Page Hostname"
    },
    {
      "type": "pagePath",
      "name": "Page Path"
    },
    {
      "type": "referrer",
      "name": "Referrer"
    },
    {
      "type": "event",
      "name": "Event"
    }
  ]
}

Environments

List Environments

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/environments

Create Environment

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/environments
Content-Type: application/json

{
  "name": "Staging",
  "description": "Staging environment for testing"
}

Delete Environment

DELETE /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/environments/{environmentId}

Container Versions

List Version Headers

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/version_headers

Get Version

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/versions/{versionId}

Get Live Version

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/versions:live

Publish Version

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/versions/{versionId}:publish

Delete Version

DELETE /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers/{containerId}/versions/{versionId}

User Permissions

List User Permissions

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/user_permissions

Response:

{
  "userPermission": [
    {
      "path": "accounts/6353461358/user_permissions/05842032124443686272",
      "accountId": "6353461358",
      "emailAddress": "user@example.com",
      "accountAccess": {
        "permission": "admin"
      },
      "containerAccess": [
        {
          "containerId": "251407136",
          "permission": "publish"
        }
      ]
    }
  ]
}

Create User Permission

POST /google-tag-manager/tagmanager/v2/accounts/{accountId}/user_permissions
Content-Type: application/json

{
  "emailAddress": "newuser@example.com",
  "accountAccess": {
    "permission": "user"
  },
  "containerAccess": [
    {
      "containerId": "{containerId}",
      "permission": "read"
    }
  ]
}

Permission levels: noAccess, read, edit, approve, publish (container); noAccess, user, admin (account)

Pagination

List endpoints use token-based pagination with pageToken parameter:

GET /google-tag-manager/tagmanager/v2/accounts/{accountId}/containers?pageToken={nextPageToken}

Response includes nextPageToken when more results exist.

Code Examples

JavaScript

const response = await fetch(
  'https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts',
  {
    headers: {
      'Authorization': `Bearer ${process.env.MATON_API_KEY}`
    }
  }
);
const data = await response.json();
console.log(data.account);

Python

import os
import requests

# List accounts
response = requests.get(
    'https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts',
    headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}
)
accounts = response.json().get('account', [])

# List containers for first account
if accounts:
    account_id = accounts[0]['accountId']
    containers_resp = requests.get(
        f'https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts/{account_id}/containers',
        headers={'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}'}
    )
    print(containers_resp.json())

Notes

• All resources use hierarchical paths: accounts/{id}/containers/{id}/workspaces/{id}/...
• The fingerprint field is used for optimistic concurrency control; include it in update requests
• Updates (PUT) require the full resource body, not just changed fields
• The usageContext for containers can be web, android, ios, or amp
• Built-in trigger ID 2147479553 is the "All Pages" trigger available in all containers
• Publishing a version makes it live immediately on all sites using the container
• Workspaces provide draft isolation; changes are committed by creating a version
• IMPORTANT: When using curl commands, use curl -g when URLs contain brackets to disable glob parsing
• IMPORTANT: When piping curl output to jq or other commands, environment variables like $MATON_API_KEY may not expand correctly in some shell environments

Error Handling

Status	Meaning
400	Bad request (invalid parameters, malformed resource body)
401	Invalid or missing Maton API key
403	Forbidden (insufficient GTM permissions)
404	Resource not found
409	Conflict (fingerprint mismatch on update)
429	Rate limited
4xx/5xx	Passthrough error from Google Tag Manager API

Troubleshooting: API Key Issues

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python <<'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://api.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with google-tag-manager. For example:

• Correct: https://api.maton.ai/google-tag-manager/tagmanager/v2/accounts
• Incorrect: https://api.maton.ai/tagmanager/v2/accounts

Resources

• Tag Manager API Overview
• Tag Manager API Reference
• Tag Manager Concepts
• Maton Community
• Maton Support