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

With no annotations, the description must carry behavioral disclosure. It does reveal the return shape (slimmed product list + total count) and the sorting limitation, which are both useful. It does not cover error cases, behavior when no query is provided, or operational constraints such as rate limits or authentication, so some transparency gap remains.

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 sentences, all informative: the first states purpose and core output, the second gives a necessary cross-tool hint, the third sets a clear limitation. No filler or repetition.

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?

The description covers the main output details and two operational constraints that the schema does not fully convey (return fields, sort limitation). With 10 parameters, no output schema, and no annotations, this is reasonably complete, though it could still mention pagination/result-count behavior explicitly.

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%, so the baseline is 3. The description adds little beyond the schema: the category source (list_categories) and sort limitation are already echoed in the schema's own field descriptions. It does not meaningfully disambiguate or extend parameter semantics.

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 action ('Search') and resource ('TheBetterBuy product catalog') and clarifies the slimmed list output with named fields. However, it does not explicitly distinguish itself from get_product or get_offers, relying on the tool name and implied role rather than contrasting usage.

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 one actionable guideline: 'Use list_categories to discover valid category values.' It also notes sorting is limited to price, which prevents incorrect sort attempts. It does not explain when to choose search_catalog over get_product or get_offers, leaving tool selection partly implicit.

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