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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety and external-reach profile is covered. The description adds that the search is 'native' full-text pinned to a specific storefront, which is mild extra context, but it says nothing about result limits, ranking behavior, or pagination beyond what the schema covers.

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?

A single front-loaded sentence with no filler or repetition. It is well sized for a simple search tool, though the parenthetical domain pin could arguably be folded into the schema instead.

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 annotations cover the read-only/open-world profile. Still, for a search tool in a dense sibling family, the absence of any routing or scope guidance leaves a real gap that the schema cannot fill.

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 q, page, and limit are already fully documented in the schema, including the 16-per-page grid caveat. The description adds no parameter-level meaning, which is the expected baseline when the schema does the work.

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?

Names a specific verb and resource ('full-text product search') and pins the target domain, so the agent knows exactly what it queries. However, it does not distinguish itself from the many pristine_marketplace_* siblings (products, product, collections, search_suggest), so an agent cannot tell from the description alone which to prefer.

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 guidance, no mention of alternatives such as pristine_marketplace_products or pristine_marketplace_search_suggest, and no prerequisites. The agent must infer that this is for free-text product lookup rather than browsing.

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