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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only states that the tool finds keywords and identifies gaps, but does not disclose operational details such as whether it compares the competitor's keywords against your domain, what output format to expect, or any rate limits/pagination 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 a single, front-loaded sentence with no waste. It immediately states the main action and value proposition, making it easy for an agent to parse quickly.

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?

With four parameters, no annotations, and no output schema, the description provides only a minimal overview. It does not explain the return structure or the exact relationship between the 'domain' and 'competitor' parameters, leaving some ambiguity. However, the core purpose is clear enough for a relatively simple lookup tool.

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 input schema has 100% description coverage for all four parameters, providing basic meanings (e.g., 'domain' = Your domain, 'competitor' = Competitor domain). The description itself does not add extra parameter semantics, but the baseline of 3 is appropriate since the schema does the heavy lifting.

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 uses a specific verb ('Find') with a clear resource ('keywords your competitor ranks for') and states the intended outcome ('identify content gaps and opportunities'). It distinguishes itself from sibling tools like keyword_research by focusing on competitor-based gap analysis.

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 competitive keyword gap analysis, but it does not explicitly state when to use this tool versus alternatives like keyword_research or domain_overview. No exclusions or prerequisites are mentioned, though the schema hints at needing both your domain and a competitor domain.

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