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

With no annotations present, the description carries the full burden of behavioral disclosure. It adds one meaningful behavioral trait: "No identifiers are retained," which signals statelessness/privacy. However, it does not state whether the tool performs network access, has side effects, or returns different behavior depending on the input category.

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 concise: two short sentences with no filler. The action and privacy note are front-loaded. It loses a point because the first sentence is too vague to be genuinely informative.

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?

This is a multi-parameter classification tool with no output schema, yet the description says nothing about what classifications exist, what the return value looks like, or how the different optional inputs affect behavior. An agent cannot confidently invoke this tool and interpret its result based on the description alone.

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 seven parameters, so the schema carries the heavy lifting. The description itself adds no parameter-level meaning, which is acceptable at the baseline of 3 for full schema coverage.

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 only "Show how this request is classified," which is vague and does not specify what kind of classification is performed, what inputs it operates on, or what output the agent should expect. It is not a tautology, but it fails to clearly distinguish this tool from sibling classifiers like domain-shape, validate-json, or file-path-ok.

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 on when to use this tool versus alternatives such as validate-json, domain-shape, or normalize-url. The description implies a classification use case but provides no explicit context, exclusions, or selection criteria.

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