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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety and scope are covered. The description adds something the annotations do not: what comes back ("matching products with the URL of their profile"), which matters because there is no output schema. It omits the result cap (max 25) and default limit behavior, which is the main remaining behavioral gap.

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 tight sentences: the capability with its filter surface comes first, the return value second. Nothing is redundant and nothing is buried.

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?

For a six-parameter, all-optional search with a nested specs object and no output schema, the definition covers what it searches and what it returns. What is missing is modest but real: default result count, whether results are ranked, and how multiple filters combine (AND vs OR).

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 83%, so the schema already explains query, category, subcategory, manufacturer, and the nested specs range/contains semantics. The description merely re-lists those filter names for the purpose statement and adds no syntax, format, or interaction detail beyond the schema, which is the expected baseline.

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+resource ("Search the catalog of components") and enumerates the filter dimensions it accepts, so the agent knows exactly what this tool does. It stops short of naming a sibling to contrast with, and the shift from "components" in the intent to "products" in the return sentence introduces a slight terminology wobble that keeps it from a 5.

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 implies a lookup use case but never states when to prefer this over get_product, list_categories, or compare_products. The only explicit routing hint ("see list_categories") lives in the schema for the category parameter, not in the description itself, leaving the agent to infer the boundary between searching and fetching.

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