compare_time_periods

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

No annotations are provided, and the description lacks behavioral details such as what the output looks like, how the comparison is computed, required permissions, or side effects. Only row_limit max is mentioned, but overall transparency is low.

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 with a clear opening sentence, but the bulleted Args list adds some overhead. It is front-loaded and every part adds value, though it could be streamlined.

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?

Despite the tool having 8 parameters and no output schema, the description only covers parameter format. Missing details include return format, comparison logic, prerequisites (e.g., site verification), and error handling, making it incomplete for an AI agent.

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%, but the description provides crucial context: date format (YYYY-MM-DD), allowed values for dimensions and search_type, max row_limit, and example for site_url. This adds significant meaning beyond the schema's type-only definitions.

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 starts with 'Compare Search Console metrics between two time periods,' which clearly states the action (compare) and resource (metrics between two periods). This distinguishes it from siblings like query_search_analytics, which likely queries single-period data.

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 explicit guidance on when to use this tool versus alternatives like query_search_analytics. The description focuses on parameters without stating when a comparison is appropriate or what to do if other tools would be better.

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