google_ads_list_accounts

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

No annotations are provided, so the description carries the full burden for behavioral disclosure. It states it returns details without side effects, but lacks information on permissions required, rate limits, or any limitations. The description is adequate for a simple listing tool but does not go beyond the obvious.

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 concise, using a clear opening line followed by a bullet list for details. Every sentence adds value, and it is front-loaded with the core purpose.

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 simplicity of the tool and the presence of an output schema, the description covers the essential aspects. It could mention prerequisites like authentication or account linking, but that is implied by the 'current credentials' phrasing. Overall, it is sufficiently complete.

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?

The single parameter response_format is explained in the description with explicit options ('markdown' or 'json'), adding meaning beyond the schema's title and type. This helps an agent decide how to format the output.

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 tool lists all Google Ads accounts accessible with current credentials, specifying the returned details (customer IDs, names, currency codes, manager status). This is specific and distinct from sibling tools that focus on performance or modifications.

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 implies usage for initial account discovery but does not provide explicit guidance on when to use this tool versus alternatives, nor does it mention when not to use it. Without any exclusions or comparisons, the guidance is only implied.

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