google_ads_estimate_keyword_traffic

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

The description mentions that the tool is a placeholder and requires Keyword Plan API setup, which adds transparency. However, it lacks details on what happens if the API is not set up, any rate limits, or the exact behavior of the traffic estimation process.

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 structured with clear sections (Args, Returns, Note) and is reasonably concise. It front-loads the main purpose and includes important notes, making it easy to parse.

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?

For a tool estimating keyword traffic in Google Ads, the description is too brief. It does not explain the output format or how to interpret the traffic estimates, and the note about being a placeholder suggests incomplete implementation. Sibling tools with similar purposes are not addressed.

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?

Given the low schema description coverage (0%), the description compensates well by explaining each parameter: customer_id format (no hyphens), keywords as a list, and location_ids optional with an example. This adds semantic value beyond the schema.

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 'Get traffic estimates for keywords,' using a specific verb and resource. However, it does not differentiate from siblings like keyword_forecast or keyword_ideas, which could lead to confusion about which tool to use.

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?

No guidance is provided on when to use this tool versus alternatives such as keyword_forecast or keyword_ideas. The note about being a placeholder and requiring Keyword Plan API setup is a prerequisite, but not a usage guideline.

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