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

Annotations already declare readOnlyHint=true, openWorldHint=true and destructiveHint=false, so the safety profile is covered. The description adds a genuinely useful scoping caveat that results are candidate-review material rather than legal conclusions, but says nothing about data coverage, identifier formats, or rate/authorization constraints.

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?

Two sentences with the purpose front-loaded and no filler; both sentences carry content. Slightly under-elaborated rather than verbose, but structurally sound.

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 output schema and no annotations covering inputs, the description should tell the agent the lookup supports batch retrieval and country scoping; neither is mentioned. The 'candidate review' disclaimer is helpful context, but the operational picture for a 3-parameter, 0%-documented tool remains incomplete.

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 0% for all three parameters, so the description must compensate and largely fails. It never explains jurisdictionIso2 (a 2-letter country code), the singular primaryIdentifier versus the batch designRegistrationIds array (up to 200 items), or that all parameters are optional, leaving the agent to infer batching and jurisdiction scoping from patterns alone.

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?

States a specific verb (retrieve) and resource (design-registration records) and enumerates the returned fields (holders, designers, legal status, dates, classifications). The phrase 'by exact identifiers' implicitly contrasts with the sibling nexscope_design_similarity_search, but no sibling is named explicitly.

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?

Usage is only implied via 'by exact identifiers', which suggests lookup rather than search, but the agent is never told when to prefer this over nexscope_design_similarity_search or the patent tools. The second sentence is an interpretive caveat ('not an infringement verdict'), not a when-to-use rule or exclusion.

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