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

With no annotations, the description carries the behavioral transparency burden. The statement 'No identifiers are retained' adds useful data-handling context, but it does not disclose whether the tool performs network access, changes state, or returns a category, score, or explanation. Some behavioral details, such as 'no disk access,' appear in the parameter schema rather than the tool description.

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 only two sentences, front-loads the purpose, and contains no filler or redundant text. Its brevity is a strength, though it sacrifices useful explanatory detail for an unusually complex parameter set.

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 tool has nine optional parameters, no output schema, and no annotations, yet the description does not explain what classification output to expect or how to relate the parameters to the classification result. An agent would struggle to know what invoking this tool actually returns or which parameters are appropriate in a given context.

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 describes all nine parameters and schema description coverage is 100%, so the baseline of 3 applies. The tool description adds no parameter-level meaning beyond what the schema provides.

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 provides a verb and identifies classification as the core action, but it never specifies what classification categories exist, what 'request' means, or how this differs from sibling tools like validate-json or domain-shape. This is a clear but vague 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?

No guidance is provided about when to use this tool rather than any of the 27 sibling tools. There is no mention of alternatives, exclusions, prerequisites, or whether one or more of the nine optional parameters should be supplied together.

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