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

Annotations already declare readOnlyHint and openWorldHint, so the safety profile is covered. The description adds genuinely useful context beyond that: the storefront URL is fixed server-side (no URL parameter needed) and results are 'normalized'. It does not describe pagination limits behavior at runtime, but the added context is meaningful.

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?

Front-loads the purpose and stays short, with the sibling redirect last. However, the two sentences describing limit and page merely duplicate the schema descriptions, so not every sentence fully 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?

An output schema exists, so return values need not be explained, and both parameters are documented. For a simple paginated list tool the description covers what an agent needs; only the redundant parameter restatements keep it from being fully optimal.

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 coverage is 100% and the description repeats the same parameter text verbatim ('Default 50, maximum 250', '1-based page number, default 1') without adding syntax, semantics, or edge cases. Per the high-coverage baseline, a 3 is appropriate.

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 static pages from Kylie Cosmetics') and pins the domain. It also names the sibling kyliecosmetics_page, so an agent can distinguish the list operation from the single-page fetch without opening a schema.

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?

Explicitly points to the alternative sibling ('Use kyliecosmetics_page to get a Kylie Cosmetics static page'), which implies the list-vs-single split. It stops short of an explicit when/when-not condition or any exclusion, so it sits at a solid 4 rather than 5.

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