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

With no annotations provided, the description carries the full burden. It only discloses that 'No identifiers are retained,' which is a privacy note, but it does not state whether the tool is read-only, performs network calls, or has any side effects. The parameter schema mentions discarding and no disk access, but that is not in the description, and the overall behavior remains opaque.

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 and is not verbose, but it is under-specified. The first sentence is vague and the second is a privacy note. While concise, it fails to provide enough information to be effective, so it does not earn a higher score.

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 the tool has 9 optional parameters, no output schema, and no annotations, the description is severely incomplete. It does not explain what the classification output is, how the parameters are used, or when the tool is applicable. The agent would need to infer behavior from parameter names and schema descriptions, which is insufficient.

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%, and each parameter is described in the schema (e.g., 'discarded after the shape check'). The tool description adds no parameter-specific meaning beyond what the schema already provides, so the baseline of 3 is appropriate.

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 states 'Show how this request is classified' which is vague and does not specify what 'compatibility' means or what classification is performed. It does not name the resource or action clearly, and it is indistinguishable from the purpose of several sibling tools without reading schemas.

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 given on when to use this tool versus alternatives. The description does not mention any exclusions, conditions, or related tools, leaving the agent to guess from the generic name and vague purpose.

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