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

With no annotations, this description carries the full burden of disclosing behavior. It does add 'No identifiers are retained,' which is a useful privacy statement, but it doesn't say whether the tool is stateless, whether it makes external calls, whether it has any side effects, or what the actual return value looks like. This is incomplete for an unannotated tool.

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 only two sentences with no filler. It front-loads the main statement ('Show how this request is classified') and then adds a privacy note. The brevity itself is a strength, though the wording could be much clearer.

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?

Despite having all parameters documented in the schema, the tool's overarching purpose is ambiguous and there is no output schema. The tool has 9 optional inputs and no required ones, but the description does not explain what classes/outputs the user can expect. The agent cannot confidently call this common tool to get a usable answer.

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%, and the input schema provides both a description and discard/security note for each of the nine parameters (e.g., 'no disk access', 'discarded after shape check'). The tool description itself adds no parameter-level meaning, but the schema already covers that. Thus, the baseline of 3 is appropriate.

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 only 'Show how this request is classified.' This is a vague statement: it doesn't specify what classification means, what is being classified, or why a user would call this tool. It does not effectively distinguish 'compatibility' from the many sibling tools (browser-url-ok, validate-json, etc.) because it gives no clue as to what set of labels or categories are involved.

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 versus the 25 siblings. There are no conditions, no if/when rules, no mention of an alternative tool. The description is just a one-line instruction without any decision framework.

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