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

With no annotations, the description carries the burden of behavioral disclosure. It adds 'No identifiers are retained,' which is a meaningful privacy behavior. However, it does not clarify whether input is transmitted externally, whether there are side effects, or what the classification process actually does beyond that one guarantee.

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 extremely compact and front-loaded: the main action comes first, followed by a useful privacy note. There is no filler or repetitive content, so every sentence earns its place.

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?

The description is not complete enough for a tool with 9 parameters, no output schema, no annotations, and many similar siblings. It does not describe the classification output format, which inputs are relevant, or when this tool should be preferred over related validation/shape tools.

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 in the schema. The tool description adds no extra meaning about which parameters matter, how they interact, or which should be supplied for a particular 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 gives a verb and object — 'Show how this request is classified' — so it is not a tautology. However, it never explains what classification is being shown, what categories or labels exist, or how this differs from the many shape/validation siblings like domain-shape, validate-json, and status-catalog.

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 call this tool versus any alternative. It only says it shows classification, with no mention of conditions, exclusions, or sibling tools. An agent would have to infer the intended use from the name and schema.

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