Does Codex support the Google Tag Manager MCP server?

Yes. Codex connects to the Google Tag Manager MCP server through one CLI command, pointed at your Metorial URL. You need the Codex CLI, IDE extension or ChatGPT desktop app.

Do I need an API key to connect Google Tag Manager to Codex?

No. You sign in to Google Tag Manager once through Metorial, and Codex uses that connection. No API keys go into Codex's settings.

Which Google Tag Manager tools can Codex use?

All 11 Google Tag Manager tools your team allows, such as Manage User Permission, Manage Container, Manage Trigger. Admins can narrow that list per team.

Can I control which teammates use Google Tag Manager in Codex?

Yes. Role-based access control decides who can use Google Tag Manager and which of its tools appear in Codex, and every call is logged with the person's identity.

What if Codex doesn't show Google Tag Manager tools?

Codex can connect without credentials and then see nothing. Run codex mcp login metorial to complete the OAuth sign-in.

Connect Google Tag Manager to Codex

Ask Codex to use the list accounts & containers tool in Google Tag Manager
Ask Codex to use the update account tool in Google Tag Manager
Ask Codex to use the manage user permission tool in Google Tag Manager
Ask Codex to use the manage container tool in Google Tag Manager
Ask Codex to use the manage trigger tool in Google Tag Manager

1. Enable Google Tag Manager in Metorial
In your Metorial portal, enable the Google Tag Manager MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
2. Add the server and sign in
The Codex CLI, IDE extension and ChatGPT desktop app share this config.
```
codex mcp add metorial --url <your-magic-mcp-url>
codex mcp login metorial
```
3. Check the connection
Type /mcp in Codex to see Metorial and its Google Tag Manager tools.

Once Google Tag Manager is enabled in Metorial, teammates sign in with SSO and get the same connection in Codex, with only the tools their role allows.

One link covers every app you approve. See how the MCP gateway handles access, roles and audit logs for the whole company.

Manage User Permission: Create, list, get, update, or delete user permissions for a GTM account.
Manage Container: Create, retrieve, update, or delete a GTM container.
Manage Trigger: Create, list, get, update, or delete triggers in a GTM workspace.
Manage Workspace: Create, list, update, delete, or sync GTM workspaces.
Manage Folder: Create, list, get, update, or delete folders in a GTM workspace.
Manage Environment: Create, list, get, update, delete, or reauthorize GTM environments.
Manage Variable: Create, list, get, update, or delete user-defined variables in a GTM workspace.
Manage Tag: Create, list, get, update, delete, or revert tags in a GTM workspace.
Manage Version: Create, list, get, publish, or delete container versions.
List Accounts & Containers: Lists GTM accounts you have access to, optionally including their containers.
Update Account: Update the name or anonymous data sharing setting of a Google Tag Manager account.

Limit which Google Tag Manager tools Codex sees with enabled_tools and disabled_tools on the metorial server in config.toml.
Set default_tools_approval_mode to auto, prompt, writes or approve. writes prompts only for tools that are not marked read-only.
Type /mcp in the composer to see the connected servers.
Override the approval behavior for a single Google Tag Manager tool with tools.<tool>.approval_mode.

Metorial is listed but tools are missing: Codex can connect without credentials and then see nothing. Run codex mcp login metorial to complete the OAuth sign-in.
Metorial times out at startup: Codex waits 10 seconds by default. Raise startup_timeout_sec under [mcp_servers.metorial] in ~/.codex/config.toml.
Long tool calls fail after a minute: The default tool timeout is 60 seconds. Raise tool_timeout_sec for the metorial server in config.toml.

Based on the Codex MCP documentation.

Frequently asked questions

Common questions about connecting Google Tag Manager to AI agents with Metorial.

Does Codex support the Google Tag Manager MCP server?
Yes. Codex connects to the Google Tag Manager MCP server through one CLI command, pointed at your Metorial URL. You need the Codex CLI, IDE extension or ChatGPT desktop app.
Do I need an API key to connect Google Tag Manager to Codex?
No. You sign in to Google Tag Manager once through Metorial, and Codex uses that connection. No API keys go into Codex's settings.
Which Google Tag Manager tools can Codex use?
All 11 Google Tag Manager tools your team allows, such as Manage User Permission, Manage Container, Manage Trigger. Admins can narrow that list per team.
Can I control which teammates use Google Tag Manager in Codex?
Yes. Role-based access control decides who can use Google Tag Manager and which of its tools appear in Codex, and every call is logged with the person's identity.
What if Codex doesn't show Google Tag Manager tools?
Codex can connect without credentials and then see nothing. Run codex mcp login metorial to complete the OAuth sign-in.