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

Annotations already declare readOnly/idempotent/non-destructive, so the safety profile is covered. The description adds value beyond that by disclosing the result shape and ranking behavior: best matches first, with slug, category, access tier (free or pro), and version. It does not discuss result caps or pagination beyond the limit param.

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?

Three short sentences, no filler, with the core purpose front-loaded and the workflow hint last. Every sentence carries distinct information (what it does, what it returns, what to do next).

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, the description correctly compensates by naming the returned fields and ordering. Combined with fully documented parameters and safety annotations, an agent has what it needs, though the relationship to search_templates remains unstated.

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%, with limit, query, and category all documented in the schema (including defaults, bounds, and examples). The description adds no parameter-level detail, so the baseline 3 applies.

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 and resource ("Find Layro React + Tailwind components by what they do") and clarifies the retrieval model is semantic/intent-based. It routes to get_component but does not explicitly distinguish itself from search_templates, the closest sibling, leaving that separation implicit.

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?

"Start here, then call get_component for details" gives a clear entry-point role and names the follow-up tool. It lacks an explicit statement of when NOT to use it (e.g. versus search_templates or list_categories), so it stops short of full routing guidance.

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