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

Annotations already declare readOnly, idempotent, non-destructive and closed-world behavior, so the safety profile is covered. The description adds genuinely useful context beyond that: the result shape (price in RON, availability, direct link) and the semantic of omitting category_id (falls back to the full catalog). Why it isn't higher: no note on pagination limits beyond what the schema states.

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?

Three sentences, front-loaded with what the tool returns, then when to use it, then the follow-up tool. Every sentence carries distinct information and there is no filler or repetition of the name.

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 an output schema present, the description needn't explain return values, and annotations cover the safety profile. Combined with a fully documented schema, the description covers purpose, usage condition, fallback behavior and the natural next step, leaving nothing an agent needs to invoke it correctly.

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 all four parameters (sort, limit, offset, category_id) are already well documented in the schema. The description's only added nuance is the whole-catalog fallback for a missing category_id, which the schema already states. Baseline 3 is appropriate when the schema does the heavy lifting.

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 ('Întoarce o pagină de produse dintr-o categorie tatuat.ro') plus the scope fallback (whole catalog when no category_id). It also names the fields returned (price in RON, availability, product link), so an agent can distinguish it from get_product and search_products without opening the 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?

Gives an explicit when-to-use condition (client wants to see what's available in a category, or wants the most popular/cheap/expensive/new products) and routes to the follow-up tool get_product for a single item. It does not explicitly contrast with search_products, which is the closest sibling, so the guidance is clear but not exhaustive.

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