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

With no annotations, the description carries the burden; it does disclose a meaningful privacy behavior – no identifiers are retained. However, it does not state whether the tool is read-only, whether it performs network access, or what happens to the provided values beyond the parameter-level 'discarded' notes.

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 sentences are front-loaded and contain no filler; the privacy note earns its place. It is concise, though brevity comes at the expense of the contextual detail needed for safe routing.

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 nine-parameter classifier with no output schema and no annotations, the description omits critical context: what classification is returned, how to choose a parameter, and how this tool relates to the sibling validators. The privacy note and schema descriptions cover only a fraction of what an agent needs.

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%, so the schema already describes each parameter in usable detail (e.g., 'Git ref name; discarded after the shape check'). The description adds no guidance about whether the nine optional parameters are mutually exclusive or which one to supply for a given request, so it stays at the baseline.

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 clear intent – show the classification of a request – but 'this request' is never defined, and no classification categories or expected outputs are given. It does not distinguish compatibility from sibling shape-checking tools like domain-shape or file-path-ok.

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 sentence addresses when to use this tool instead of the 27 sibling tools. There are no alternatives, exclusions, or conditions such as 'when you need to route a request' or 'instead of calling validators directly.'

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