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

Annotations already declare readOnlyHint=true and openWorldHint=true, covering the safety profile. The description adds a genuine behavioral detail about response shape (sort/filters fields in the shared DTO are always omitted), which is useful beyond the annotations. However it is framed in internal jargon ('generic family', 'shared DTO') rather than telling the agent what it means for the returned data.

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?

The first sentence is well front-loaded and earns its place. The second sentence is dense with internal implementation jargon ('shared DTO', 'generic family', 'that feature') that is hard for an agent to act on and could be trimmed to a clause about omitted fields.

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?

An output schema exists, so return values needn't be explained, and annotations cover the read-only profile. Still, the description leaves the main open question — how this differs from the collection-scoped and single-product siblings — unanswered, which matters given the very dense gymshark sibling set.

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 page and limit (with defaults and a 250 max) are already fully documented in the schema. The description adds nothing about either parameter, 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: 'Returns normalized products from Gymshark's public product catalog.' An agent knows it lists products, but the description never distinguishes it from close siblings like gymshark_collection_products or gymshark_product, so the boundary of when this unscoped list is the right pick is left 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?

No when-to-use or when-not-to-use guidance is given, and no sibling is named as an alternative. The agent must infer that this is the catalog-wide list versus collection-scoped or single-product tools from context alone.

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