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Google Tag Manager MCP Server

by rgellis

Get Version

get_version

Retrieve a specific Google Tag Manager container version and inspect every entity it contains, such as tags, triggers, and variables.

Instructions

Get one container version, including every entity it contains.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
account_idYesNumeric Tag Manager account ID.
version_idYesNumeric container version ID.
container_idYesNumeric container ID.
container_version_idNoRarely needed; overrides the version in the path. Leave unset.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.4/5.0
Behavior3/5

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

No annotations are present, so the description carries the behavioral disclosure burden. It usefully reveals that the returned version includes every contained entity, which is a meaningful behavioral trait. However, it does not address other behaviors such as read-only safety, handling of deleted versions, or payload size, though the output schema covers the return structure.

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?

The description is a single tight sentence that front-loads the action and resource, then adds the most decision-relevant qualifier—'including every entity it contains.' There is no filler or repetition.

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

Completeness4/5

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

An output schema exists and all parameters are fully documented, so return values and parameter semantics are covered elsewhere. The only notable gap is explicit routing among the many version-related sibling tools, but the description plus structured data is sufficient for correct invocation.

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%, so all four parameters are already documented in the schema, including the rarely-needed container_version_id override. The description adds no parameter-level detail beyond what the schema provides, so the baseline score of 3 applies.

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 specific verb and resource: retrieve one container version, and adds a key scoping detail—'including every entity it contains.' This separates it somewhat from version-header or live-version tools, though it does not explicitly name sibling alternatives.

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 on when to use this tool versus related siblings like get_live_version, get_latest_version_header, or list_version_headers. The sentence describes what the tool does, not when to prefer it, so usage context is only weakly implied.

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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