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

No annotations exist, so the description carries the transparency burden. The phrase 'No identifiers are retained' and schema-level notes like 'discarded after the shape check' and 'no disk access' do disclose retention and access behavior. However, the overall mechanism—what classification means, whether external calls are made, or what side effects occur—remains undisclosed.

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 two-sentence description is compact and front-loaded with its purpose before a retention statement. Both sentences are short and non-verbose, though the first sentence's vagueness keeps it from earning a perfect 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?

The tool is complex (9 optional parameters, no required fields, many siblings, no output schema yet it is expected to reply with some classification), and the description fails to explain what the output includes or how the tool handles multiple or zero parameters. Additionally, it does not orient the agent toward any of the sibling tools, leaving a large context gap.

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 schema already explains each parameter's meaning and lifecycle (e.g., 'Git ref name; discarded after the shape check'). The tool description adds little beyond a general, redundant retention guarantee; therefore the baseline of 3 applies and no additional semantic value is provided.

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 verb and a target ('Show how this request is classified') but 'classified' is vague and never defined; it does not explain what category or compatibility decision results. It also fails to distinguish this tool from its many siblings such as 'citation', 'domain-shape', or 'validate-json', whose purposes overlap with a classification-style action.

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 explicit guidance is given about when to use this tool instead of its siblings. With 9 heterogeneous optional parameters (ref, url, city, feed, host, json, path, zone, query) and no stated rule for selecting among them, the agent is left to infer the intended invocation context.

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