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

With no annotations, the description must carry the full behavioral burden, but it only states 'No identifiers are retained.' It does not disclose whether any external calls occur, whether the operation is read-only, or what side effects exist. The parameter-level discard notes are in the schema, not this description.

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 purpose is front-loaded. It is concise, though the terseness contributes to the overall vagueness.

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?

For a 9-parameter tool with no output schema and no annotations, the description is too thin. It does not explain what a classification looks like, which parameters are relevant, or what the agent should expect in the response. The schema documents each parameter but does not compensate for the missing operational 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?

Schema description coverage is 100%, so the baseline is 3. The description itself adds no parameter-level meaning beyond the schema; the per-parameter discard semantics are already fully documented in the input schema.

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 provides a verb ('Show') and a vague object ('how this request is classified'), but it never defines what classification means, what categories are returned, or how it relates to the tool name 'compatibility'. It also does not distinguish this tool from the many sibling check/classification 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?

No guidance is given for when to use this tool versus alternatives like domain-shape, validate-json, or fetch-status. There are no exclusions, conditions, or mention of the scenarios this tool is designed for.

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