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

With no annotations, the description carries the burden of behavioral disclosure. It does add one meaningful behavioral trait: 'No identifiers are retained.' However, it omits what the tool returns, whether it performs network or side-effectful work, and how the classification is computed, leaving significant gaps.

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 with no filler, and the main action is front-loaded. The privacy note earns its place. It is concise, though the extreme brevity contributes to some of the vagueness noted elsewhere.

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 and no annotations, so the description should explain return behavior and invocation context, but it only says 'classified' and adds a privacy note. With nine optional parameters and no explanation of how they relate to the tool's purpose, an agent would struggle to call this 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?

The description adds no parameter-level meaning, but the input schema already describes all nine optional parameters (100% coverage). Since the schema handles the semantic burden, the description's lack of parameter detail is not a major penalty.

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 a clear action ('Show...') and a resource ('this request'), but 'classified' is left undefined: it does not say what classification categories are used, what 'this request' means, or how this relates to the tool name 'compatibility'. It also does not distinguish this tool from the many sibling shape/check tools.

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 any sibling tool, no mention of alternatives, and no exclusions. The only added sentence is a privacy guarantee, not a usage guideline.

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