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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered elsewhere. The description adds nothing behavioral — no return shape, no pagination, no permission notes — and the revision string is noise.

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

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

The core sentence is one line and front-loaded, with zero waste. The trailing 'Tools revision' line is irrelevant boilerplate that does not earn its place.

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

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

An output schema exists, so return values need not be described. But for a tool whose only parameter is an opaque workspace identifier and which sits among many GTM list siblings, the definition lacks the identifier format and any sibling routing needed to call it correctly.

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

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

Schema description coverage is 0%, so the description is the only place the single 'workspace' parameter could be explained, and it says nothing about the expected identifier format (GTM workspaces require account/container/workspace path). With one undocumented param, the description fails to compensate.

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

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

States a specific verb and resource ('List triggers in a workspace'), which lets an agent distinguish it from gtm_list_tags, gtm_list_variables and gtm_list_folders by resource type. It does not, however, explicitly contrast itself with those siblings.

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

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 list operation versus the sibling list tools, and no mention of prerequisites such as needing a container/workspace to already exist. The only extra content is a 'Tools revision' string, which is not usage guidance.

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