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Google Tag Manager MCP Server

by rgellis

Create Folder

create_folder

Create a folder in a Google Tag Manager workspace by specifying account, container, and workspace IDs, plus folder name and optional notes.

Instructions

Create a folder in a workspace.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
folderYesFolder resource. Requires name, e.g. {"name": "GA4", "notes": "Everything GA4-related"}.
account_idYesNumeric Tag Manager account ID.
container_idYesNumeric container ID.
workspace_idYesNumeric workspace ID.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.9/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure, but it only says 'create' and offers no detail on side effects, permissions, duplicate handling, or workspace scoping. For a mutation tool, this is a noticeable gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, front-loaded sentence with no filler. It is appropriately brief, though its brevity leaves usage and behavioral context to other dimensions.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists and all required parameters are documented in the input schema, so an agent can construct a valid call. However, the description lacks prerequisite, side-effect, and selection context, making it only minimally complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, and the folder parameter already documents the required name and gives an example. The description itself adds no parameter-level meaning beyond the phrase 'in a workspace,' so it remains at the schema-heavy baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a clear action ('Create'), resource ('folder'), and context ('in a workspace'), so it is not tautological and is distinguishable from folder update/list/delete tools. It does not explicitly call out a sibling alternative, but the verb and object make the core purpose unambiguous.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no guidance about when to use this tool versus alternatives such as update_folder, delete_folder, or move_entities_to_folder. No prerequisites, exclusions, or caveats are mentioned; usage is only implied by the verb.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server

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