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

No annotations are provided, so the description carries the full behavioral burden, yet it says nothing about crawling, cost, latency, authentication, or rate limits. The existence of a max_pages control strongly implies a multi-page crawl, but the description never acknowledges or bounds that 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?

A single front-loaded sentence with zero filler, which is structurally fine, but at this brevity it is under-specified rather than concise — nothing about inputs or behavior is front-loaded because nothing is stated.

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?

For a 3-parameter tool with 0% schema coverage, no annotations, and no output schema, the description is far too thin. Missing: which parameter is the target vs competitor, what the comparison contains, and how max_pages bounds the scan.

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% for all 3 parameters. The description implies a competitor URL but never names or maps url vs competitor_url, and it gives no meaning to max_pages (default 3, max 10), which is the one parameter whose effect is non-obvious. It does not compensate for the coverage gap.

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?

"Scan a competitor and return side-by-side comparison" gives a verb (scan) and the deliverable (comparison), but it's ambiguous about what is being compared with what — the two required URI params (url and competitor_url) are never referenced, so the agent can't tell which is the subject. It also fails to distinguish itself from the sibling scan_website, which sounds nearly identical in function.

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 when-to-use guidance, no statement of when to prefer this over scan_website or refresh_scan, and no mention of prerequisites. The agent must infer the comparison workflow entirely.

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