compare_pages

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

No annotations provided, so description fully responsible. It only says 'compare performance metrics', omitting behavior like data freshness, read-only nature, rate limits, or side effects. Insufficient disclosure for a comparison tool.

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?

Single sentence of 9 words, front-loading purpose. No redundancy. Could incorporate more information without losing conciseness, but current version is efficient and clear.

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 no annotations, no output schema, and 4 parameters, the description is too minimal. Lacks details on return format, constraints, edge cases, or how it fits among 16 sibling tools. Incomplete for the tool's complexity.

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 100%; all four parameters are documented in the schema. The description adds no additional meaning beyond what the schema already provides, thus baseline score of 3 applies.

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 explicitly states the action 'compare' and the resource 'performance metrics between two URLs', with clear side-by-side outcome. It distinguishes from siblings like analyze_page_speed (single page) and batch_analyze (multiple pages), leaving no ambiguity about what the tool does.

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 on when to use compare_pages over alternatives (e.g., analyze_page_speed for single URLs, batch_analyze for more than two). No mention of prerequisites or when not to use.

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