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

With no annotations, the description carries the full burden and does disclose real behavioral traits: a hard cap of 10 results, coverage blind spots (not every batch or country), and an explicit no-endorsement disclaimer. It does not clarify read-only status, latency, or result shape, but the coverage caveats are the valuable part.

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 short sentences, front-loaded with the core action. Slightly redundant with 'check the notice' and 'read the notice' saying nearly the same thing, which costs a little tightness.

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?

For a one-parameter search tool with no output schema, the description covers the essentials: what it searches, the result ceiling, and the reliability caveat. Only minor gaps remain, such as return fields or whether results are ranked.

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?

Only one parameter with 100% schema description coverage, so the schema already explains that query accepts product name, brand, model number or UPC. The description adds no additional syntax or matching-behavior detail, which matches the baseline-3 case.

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 (Search) and resource (local U.S. CPSC recall data), plus a scope limit (up to 10 notices). No sibling overlap exists among find_data/page_to_markdown/etc., so explicit differentiation isn't needed, but it doesn't hurt to omit it.

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?

Implies usage indirectly via 'may match' and the repeated instruction to verify against the full notice, but never states when to use this versus alternatives or what a valid query context looks like.

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