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

With no annotations, the description must carry the burden of behavioral disclosure. It does provide a useful data-handling guarantee in 'No identifiers are retained,' which complements the per-parameter discard notes. However, it does not disclose whether the operation has side effects, what output is produced, or any other operational 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 two short sentences with no filler, states the main idea first, and adds a meaningful privacy note in the second sentence. It is appropriately concise, though its brevity contributes to missing operational context.

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 tool with nine optional parameters and no output schema, this description is incomplete: it does not explain how classification works, what the returned classification looks like, or which parameter should be supplied in which scenario. The privacy disclosure is helpful but not sufficient for an agent to invoke the tool confidently.

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 100%, so each of the nine parameters is already individually documented. The description does not add parameter-specific meaning beyond the general privacy statement, but the schema carries the semantic load.

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 gives a verb and a general subject, but 'how this request is classified' does not specify what classification scheme is used, what 'compatibility' means, or how this tool differs from siblings. It is vague rather than a pure tautology or completely missing.

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 guidance about when to use this tool versus alternatives like domain-shape or normalize-url, and no conditions for choosing among the nine optional parameters. The privacy note does not help an agent decide when to call this tool.

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