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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds only that the response bundles specification, family grouping, and media; it says nothing about behavior for an unknown slug, error handling, or payload size. Adequate against the lower annotated bar, but not rich.

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?

One front-loaded sentence that enumerates the returned content and contains no filler. Every clause earns its place.

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 must carry the return-value burden, and it does name the three returned categories. For a one-parameter read tool this is close to sufficient; it is only slightly thin on what 'family grouping' entails and on failure behavior for a bad slug.

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?

There is a single required 'slug' parameter and schema coverage is 100%, with the schema itself explaining that the value comes from list_polish_fair_price_products. The description adds no format, casing, or validity constraints, so the baseline of 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?

The description names a specific verb (Get) and resource (product) and enumerates the payload: full specification, family grouping, and media details. The singular 'product slug' implicitly contrasts with the plural list_polish_fair_price_products sibling, but no sibling is named explicitly, so it stops short of 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 offers no when-to-use guidance, no prerequisites, and no routing between this tool and list_polish_fair_price_products or get_polish_fair_price_history. The only hint that a slug comes from the list tool lives in the input schema, not the description.

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