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

No annotations are supplied, so the description carries the full behavioral burden, and it delivers nothing: no mention of whether inputs are counts, what formula is applied, how zero cells are handled, or what the response contains. For a 4-parameter statistical tool this is a complete disclosure failure.

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?

It is short, but this is under-specification rather than conciseness — a single duplicated phrase that conveys no information. Brevity without content does not earn credit.

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 no annotations and no output schema, the description is the only source of guidance, and it says nothing about the formula, input format (counts vs. rates), or expected result. The definition is entirely inadequate for a 4-parameter statistical calculator.

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 nominally 100%, and the schema itself does document that four count-like parameters exist, so the baseline of 3 applies. However, the schema descriptions are placeholder filler ('ExposedCases to process'), and the tool description adds no interpretation of which values go where, so nothing beyond baseline credit is earned.

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 is a pure tautology: 'Relative Risk: Relative Risk' simply restates the tool name without stating any verb, computation, or output. An agent cannot tell from this text that it computes an epidemiologic risk ratio, nor distinguish it from siblings like x402-odds-ratio or x402-cohens-d.

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 indication of when to use this tool, what inputs it expects, or which sibling tools (odds ratio, risk difference, attributable risk) would be the alternative. No context or exclusions are provided whatsoever.

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