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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions 'public searchable fields' but does not disclose behavior such as result format, pagination, matching semantics, or what happens when no matches are found. This is a minimal disclosure for a search 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 a single, front-loaded sentence with no filler or repetition. It conveys the core action and scope efficiently, making it easy for an agent to parse quickly.

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 that the tool is a simple search endpoint with three well-documented parameters and no output schema, the description plus schema is minimally adequate for invocation. However, the absence of usage context, sibling differentiation, and any note about return structure leaves some gaps in the overall context an agent might need.

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?

The input schema thoroughly documents all three parameters with descriptions, defaults, and constraints. The description adds little beyond the schema—it only implies that searching happens across 'public searchable fields' and within one category. With high schema coverage, 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 clearly states the action ('Search') and the resource ('one NPRA category'), and specifies it operates on 'public searchable fields.' It is specific enough to distinguish from a generic search tool, though it does not name sibling tools for explicit differentiation.

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?

The description gives no guidance about when to use this tool versus alternatives, no context about preferred scenarios, and no exclusions. Usage must be inferred from the generic phrasing 'Search one NPRA category,' which is not sufficient for scenario-based selection.

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