compare_competitors

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

No annotations are provided, so the description carries the burden. It discloses the API key requirement, which is a behavioral constraint, but does not state whether the tool is read-only, has rate limits, or other side effects. For a comparison tool, it likely does not modify data, but this is not explicit.

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 two sentences with no unnecessary words. It front-loads the purpose and then adds a prerequisite. Every sentence earns its place.

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 low complexity (2 parameters) and the presence of an output schema (not shown), the description covers the essential purpose and a prerequisite. It lacks usage guidelines but is otherwise complete for a simple comparison 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?

Schema description coverage is 0%, so the description must add meaning. It clarifies that 'my_domain' and 'competitor_domain' are domains and that the output includes Backlinks, Traffic, DR. However, it doesn't specify domain format or provide examples, leaving some ambiguity.

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 compares SEO metrics (Backlinks, Traffic, DR) of two domains. The verb 'compares' and resource 'SEO metrics' are specific, and the listed metrics distinguish it from sibling tools like 'get_backlinks' or 'estimate_traffic'.

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 mentions the prerequisite 'Requires CAPSOLVER_API_KEY' but provides no guidance on when to use this tool versus alternatives, such as 'get_backlinks' or 'estimate_traffic'. No exclusions or context for selection.

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