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

No annotations are provided, so the description carries the full burden. It does disclose a meaningful privacy guarantee ('No identifiers are retained'), and the parameter descriptions reinforce a discard/stateless behavior. However, it does not explain what happens during classification, whether any external action is taken, or what the response contains.

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-loads the purpose, and the privacy sentence is relevant. However, for a tool with nine optional parameters and no output schema, the description is under-specified rather than efficiently complete.

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?

Given no annotations, no output schema, and nine semantically diverse parameters, the description does not explain return value, classification criteria, or how the tool fits into the sibling set. An agent cannot confidently predict what will happen when calling this tool.

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 parameter is already documented individually in the schema. The tool description adds no cross-parameter or classification-specific meaning, but the schema carries enough of the load to justify the baseline score of 3.

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 has a verb ('Show') and an object ('how this request is classified'), so it is not a pure tautology. However, it never defines what 'classified' means, what the classification categories are, or what output the agent should expect. It also does not distinguish this tool from the many sibling shape/check tools.

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 exclusion criteria, and no mention of alternatives. With 27 sibling tools, an agent receives no help deciding whether to call compatibility instead of a more specific tool like validate-json, domain-shape, or normalize-url.

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