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

No annotations are provided, so the description carries the full burden. It only states 'No identifiers are retained,' a privacy note, but says nothing about side effects, read-only status, external calls, or the nature of the classification. An agent cannot infer whether this is a safe read operation or performs network requests.

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?

At two sentences, it is short but not concisely informative. It is under-specified rather than efficient, offering almost no operational detail. The privacy note is front-loaded but the core purpose remains undefined, making the brevity a liability.

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?

With 9 optional parameters, no output schema, and no annotations, the description is far from complete. It does not explain what 'classified' means, what the output looks like, how the parameters are used, or any constraints. An agent has almost no information to correctly invoke this tool.

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 coverage is 100% with each of the 9 parameters having a description in the schema. The tool description adds no additional parameter context beyond what the schema provides. The baseline of 3 applies because the schema does the heavy lifting, but the description itself is silent on how parameters relate to the classification.

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 says 'Show how this request is classified' which identifies a verb and a general resource, but 'request' and 'classified' are undefined. It does not distinguish from siblings like 'validate-json' or 'file-path-ok' which are also classification/validation tools. The name 'compatibility' hints at a purpose but the description fails to specify what compatibility is checked.

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 of the 27 siblings. No mention of alternatives, exclusions, or specific conditions. The description is a single vague sentence with no context for selection.

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