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

With no annotations provided, the description carries the full behavioral burden. It usefully discloses that identifiers are not retained, but it does not explain whether the classification is local, performs external lookups, has side effects, or requires authentication. The core classification 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 with the primary action front-loaded and no redundant schema content. The privacy guarantee adds information beyond the schema and earns its place.

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 needed to explain what classification results look like and when to choose this tool. It only says 'this request' is classified, leaving the return values, parameter combinations, and sibling differentiation undefined.

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 input schema already documents 100% of the four optional parameters (url, host, json, zone), so the baseline is 3. The description adds no parameter-level guidance, such as how each field influences the classification, but full schema coverage means it does not need to compensate heavily.

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 includes an operative verb ('Show') and an object ('this request'), and indicates the tool returns a classification. However, it never defines what kind of classification is produced, what categories exist, or how this differs from sibling tools like compat-json or domain-shape.

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 compatibility versus any of the ten sibling tools. The privacy note 'No identifiers are retained' is a behavioral property, not a selection rule, so an agent gets no direction on which inputs or scenarios call for this tool.

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