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

No annotations are provided, so the description carries the full disclosure burden. It does reveal that detection relies on headers and cookies rather than active scanning, but it omits whether the tool fetches a live target, how errors surface, or what limitations exist. This is too thin for full behavioral transparency.

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 terse sentence that front-loads the tool's category and purpose. It wastes no words, repeats no schema information, and every token adds meaning.

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?

Although an output schema exists, the agent still lacks the essential input semantics: what q should be. There is also no behavioral or usage context beyond the one-line purpose. The simple shape is fine, but the description leaves a critical gap that prevents confident invocation.

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 schema documents only a single optional string parameter 'q' with 0% schema description coverage. The description never defines what q should contain; an agent must guess whether it is a domain, URL, IP, or raw header data. The description does not compensate for the missing parameter meaning.

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 states a specific action ('Detect') and a specific resource ('WAF/CDN'), and even names the evidence source ('headers & cookies'). This distinguishes it from the many sibling reconnaissance tools without needing to open the schema.

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 purpose itself implies the tool should be used when WAF/CDN detection is needed, but there is no explicit when-to-use, when-not-to-use, or comparison to related tools such as headers, dns, or tech. The usage is only implied, not guided.

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