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

There are no annotations, so the description carries the behavioral burden. It explicitly states 'No identifiers are retained,' and the input-schema descriptions reinforce this with phrases like 'discarded after the shape check' and 'no disk access.' It does not disclose every possible side effect, but it provides unusually clear privacy behavior for a parameter-heavy tool.

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 short and front-loaded: it states the core action first and then adds a privacy guarantee. Both sentences serve a purpose and there is no filler. It is too terse in terms of information coverage, but as a structural/conciseness matter it is efficient.

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, no output schema, no annotations, and many similar sibling tools, a one-line description is not enough. The agent still does not know what the classification output looks like, which inputs are recommended, or how to distinguish this tool from sibling probe tools that cover the same parameter domains.

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 input schema already provides descriptions for all nine parameters, giving each value a clear meaning and discard behavior. The tool description itself adds only a global no-retention statement and does not explain how the parameters relate, whether more than one should be provided, or how each parameter affects the classification.

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 says the tool will show how a request is classified, which is a clear enough action and object, but it does not define what classification means, what dimensions are used, or how this differs from the many sibling probe/shape tools. It is not a pure tautology, but it is too vague to give a high-confidence purpose.

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 about when to use this tool instead of sibling tools such as normalize-url, validate-json, timezone, or domain-shape. With nine optional parameters and no required ones, the description also does not tell the agent which parameter should be supplied or what outcome to expect.

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