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

With no annotations, the description carries full responsibility for behavioral disclosure. It only states 'No identifiers are retained', which is a data-retention note but does not reveal whether the tool performs network calls, side effects, or how it processes inputs. The schema hints at some behaviors (e.g., 'no disk access' for path), but the description itself is nearly silent on behavior.

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, which is concise, but it is under-specified rather than appropriately sized. The first sentence states a vague purpose, and the second is a privacy note. There is no structured information about inputs, outputs, or usage, so the brevity is a deficiency, not an asset.

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 9 diverse optional parameters and no output schema, the description should explain what the tool does with these inputs, what the classification returns, and how it relates to sibling tools. None of this is present. The description is fundamentally incomplete for an agent to use the tool correctly.

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 with its own description. The tool description adds no additional parameter-level meaning, so it neither compensates nor detracts. Per baseline, a score of 3 is appropriate when the schema fully covers parameter semantics.

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 'Show how this request is classified' is vague and does not specify what kind of classification, what the output represents, or which inputs are relevant. It does not clearly distinguish this tool from its many siblings, such as 'domain-shape' or 'validate-json'. The verb 'show' is generic and the noun 'classification' is undefined.

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 its alternatives. There is no mention of use cases, prerequisites, or situations where a sibling tool would be more appropriate. An agent has no way to decide if this tool is the right one for a given request.

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