ga4_list_properties

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

With no annotations provided, the description carries the full burden of transparency. It discloses that the operation lists properties and returns IDs/names, implying a read-only action, but it does not state safety traits, error implications, or limitations. The mention of service account scope adds useful context, but there is no explicit statement about non-mutating behavior.

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 description is two short sentences that immediately state the action and output. There is no redundant or filler content, making it highly concise and well-structured.

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?

Given the tool's simplicity (no parameters) and the presence of an output schema, the description is mostly complete. It covers the key purpose and return items. However, it does not mention typical edge cases like empty results or auth failures, nor does it relate itself to sibling tools. For such a simple tool, this is adequate, hence a 4.

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?

There are zero parameters, so the schema provides no semantics to clarify. Per the rubric, a baseline of 4 is appropriate for parameterless tools. The description does not need to explain parameters and adds nothing beyond the schema, which is acceptable in this case.

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?

The description clearly states the verb 'List' and the resource 'all GA4 properties', which immediately establishes the tool's function. It also specifies the return content (property IDs and display names), distinguishing it from sibling tools that focus on reports, pages, or traffic sources.

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?

The description gives no explicit guidance on when to use this tool versus alternatives. It implies a listing/discovery use case, and the scope 'accessible by the service account' gives some context, but it does not mention that this might be a prerequisite for other GA4 tools or when to prefer it over siblings.

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