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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds the useful domain constraint 'used in Yugalinks commerce data' and indicates a lookup-style result, but does not describe matching behavior or return characteristics.

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?

Single sentence that is front-loaded with the verb and resource. It contains no filler, no repetition of the tool name, and every word 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?

With an output schema, read-only annotations, and self-describing parameters, the description covers the essential lookup purpose. It only misses explicit usage differentiation from related lookups, but the low complexity means the tool can still be invoked 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 75%, with q, limit, and offset documented. The description does not add parameter-level meaning, and hs_code is only minimally described in the schema. Baseline 3 is appropriate because the schema carries most of the burden.

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 action ('Find') and resource ('HS product codes and descriptions'), with data-scope context ('Yugalinks commerce data'). It is clear, though it does not explicitly distinguish itself from siblings such as lookup_countries or get_product_trade.

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 guidance is given on when to use this tool versus alternatives. The description explains only what the tool does and does not mention exclusions, prerequisites, or sibling tools like search_trade_datasets.

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