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Google Tag Manager MCP Server

by rgellis

Get Client

get_client

Fetch a single client's configuration from a Google Tag Manager workspace by providing account, container, workspace, and client IDs.

Instructions

Get one client from a workspace.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
client_idYesNumeric client ID.
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, the description bears the full burden of behavioral disclosure. It only states the action (get one client) and implies a read operation, but omits details on authorization, error behavior (e.g., not found), or any side effects. It does not add value beyond the basic action.

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

Conciseness5/5

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

A single, front-loaded sentence with no wasted words. It directly states the purpose without extraneous detail, making it appropriately sized for a simple retrieval tool.

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

Completeness2/5

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

Given the hierarchical context (account, container, workspace, client) and all parameters required, the description is too sparse. It does not explain what a client is, the necessity of all IDs, or how to obtain them. While the output schema exists, the description lacks sufficient guidance for an agent to correctly invoke the tool in context.

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 coverage is 100%, so the schema already documents each parameter as a numeric ID. The description adds the context 'from a workspace' but does not clarify relationships between parameters or usage order. Since the schema carries the meaning, a baseline of 3 is appropriate.

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 verb ('Get') and resource ('one client') from a 'workspace', which distinguishes it from list operations. However, it does not explicitly differentiate from siblings like list_clients or get_workspace, relying on the singular vs. plural distinction.

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?

No guidance is provided on when to use this tool versus alternatives. It does not mention that this retrieves a single client by ID, when to prefer it over list_clients, or any prerequisites such as obtaining the IDs first.

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

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