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

The description and parameter notes disclose privacy behavior ('No identifiers are retained', values are 'discarded'), which is useful. However, with no annotations, it still omits side effects, return type, error behavior, and what the classification actually does.

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 and contains no redundant words. It is well-structured as short prose, though the brevity contributes to the lack of context.

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?

There is no output schema, example, or explanation of classification categories, making it impossible to know what the tool returns or how to interpret results. The privacy note and parameter labels provide only fragmentary 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?

Each parameter has a one-line schema description, so individual fields are labeled clearly. Yet the descriptions are heterogeneous ('normalize or cite', 'weather hint', 'validate', 'length check') and do not explain how they relate to a unified classification or compatibility result.

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' does not state what classification means, what output is produced, or what 'compatibility' refers to. The only clue is the tool name, but no resource or domain object is identified.

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 about when to use this tool or how it differs from sibling tools. There is no mention of alternatives, prerequisites, or intended call patterns.

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