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

No annotations are provided, so the description carries the full burden. 'Scan a competitor' suggests some form of web scanning, but there is no disclosure of side effects, permissions, rate limits, or whether the operation is read-only. The impact on the system is unclear.

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 concise sentence that front-loads the primary action. It is efficient, though it sacrifices substance for brevity. It earns its place as a purpose statement, but lacks additional helpful structure.

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 three parameters (two required), no output schema, and no annotations, the description is insufficient. It does not clarify the meaning of 'url' vs 'competitor_url', what max_pages controls, or the format of the comparison result. A more complete description would explain these aspects.

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%, and the description adds no parameter details. It mentions 'competitor' which relates to competitor_url, but omits the roles of 'url' and 'max_pages'. The description does not compensate for the lack of schema descriptions.

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 scans a competitor and returns a side-by-side comparison, distinguishing it from sibling tools like scan_website which likely scans a single site. The verb and resource are specific, though it could be clearer about what is being compared.

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?

There is no explicit guidance on when to use this tool versus alternatives. It doesn't mention prerequisites, use cases, or alternatives such as scan_website or get_score_breakdown. The description implies a comparison scenario but fails to provide context.

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