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

With no annotations, the description carries the full burden of behavioral disclosure. It does add one useful privacy guarantee: 'No identifiers are retained.' However, it does not disclose whether the inputs are sent externally, whether there are side effects, what the classification output contains, or how the parameters are processed. This is minimal coverage, not sufficient for a tool with this many inputs.

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, and the primary purpose phrase is front-loaded. The privacy statement is a distinct, useful piece of information that earns its place. It is concise, even though the content is under-specified in other dimensions.

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?

A 9-parameter tool with no output schema and no annotations needs far more than a one-line classification statement. The description does not explain how to choose which parameter to populate, what the classification response looks like, or how this tool relates to the large set of sibling tools. This is inadequate for an agent to invoke it correctly in most realistic situations.

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 coverage is 100%, with all nine parameters having individual descriptions in the input schema. The tool description itself adds no parameter-level meaning, but the baseline of 3 applies because the schema already documents each parameter. The description neither clarifies nor conflicts with the schema's parameter usage.

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 'Show how this request is classified,' which identifies a verb and an object but leaves the classification scheme undefined. It never states what categories are produced, what inputs trigger them, or how this differs from the many sibling shape-checking tools. This is more than a tautology but still too vague to guide selection.

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 description provides no guidance on when to use this tool versus alternatives like validate-json, normalize-url, or domain-shape. 'No identifiers are retained' is a privacy trait, not a usage condition. There is no when-to-use, when-not-to-use, or alternative mentioned.

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