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

With no annotations provided, the description carries the full burden. It only discloses that 'No identifiers are retained,' which is a privacy note, but does not state whether the operation is read-only, what side effects might occur, or what the response contains. This is a significant gap for a tool that likely performs multiple checks.

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, but brevity here is under-specification rather than conciseness. It front-loads a privacy note but omits essential functional information. For a tool with nine parameters, this is far too sparse.

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?

Given 9 parameters, no output schema, no annotations, and 28 sibling tools, the description is wholly inadequate. An agent cannot decide when to use this tool versus, for example, validate-json or timezone. There is no mention of output format, success criteria, or error behavior.

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 each parameter has a basic explanation. However, the tool description adds no meaning beyond that: it doesn't explain how the nine optional parameters relate, whether they are alternatives or mutually exclusive, or what 'classification' means for each. The agent cannot determine which parameter to supply without additional guidance.

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' but never defines what classification means or what kind of request it handles. The tool name 'compatibility' doesn't help. It is not a tautology but remains too vague to distinguish from siblings like validate-json or search-query-len.

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 the many sibling tools. It doesn't mention which parameters to provide under what circumstances, nor any alternative tools. The agent is left to guess the intended use case.

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