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

Annotations already declare readOnly, idempotent, openWorld, and non-destructive, so the safety bar is met without the text. The description adds real domain context beyond that: WeedSeeds4U entries are links, not stock, and prices may be stale snapshots requiring source-page verification. The closing 'does not buy anything' is largely redundant with readOnlyHint but harmless.

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?

Four short sentences, front-loaded with the core action and followed by caveats; no filler or repetition. Slightly more economical framing could merge the two caveat sentences, but the structure is sound.

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?

Rich annotations and the absence of an output schema mean return-value explanation is not required, and the domain caveats cover the main behavioral risk. The gap is parameter-level: with zero schema description coverage on six parameters, an agent still cannot tell from the description how limit/offset/match/category behave.

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 0% across six parameters, so the description must carry the load and it does not. Only the site scope is loosely implied by 'one or all catalogs'; query, limit, offset, match, and category semantics (including the enum values and max caps) are never mentioned.

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: searching published product descriptions/information across catalogs. It implicitly distinguishes itself from get_item (single item) and list_categories/list_projects (enumerations), but never names those siblings, so the differentiation is left to inference.

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 phrase 'across one or all catalogs' hints at the scope choice and warns that WeedSeeds4U results are navigation links rather than stock, which is useful selection guidance. However, it gives no explicit when-to-use-this-instead-of-get_item or list_categories rule, leaving the routing decision implied.

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