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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description adds genuinely new behavioral context: live (non-cached) results from the external OneFindMe engine, Israeli delivery, shekel pricing, and multilingual query acceptance. It omits return shape/pagination, but with annotations carrying the risk profile the added context is solid.

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 tight sentences, front-loading the core capability before the routing hint. No filler; only 'through the OneFindMe engine' is arguably extraneous detail, though it does convey the source of results.

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 two-parameter read-only search with no output schema, the description covers what is searched, where it ships, currency, language support and when to prefer it over the guides. Return-format details are the main omission, which is minor since results are product listings.

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% and both parameters are documented there, including the example Hebrew query and the 1-15 range. The description's note that Hebrew or English is accepted adds slight meaning about the query parameter but nothing the schema example didn't already imply, so the baseline of 3 applies.

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 ('Live search of AliExpress baby and parenting products') with clear scope: delivery to Israel, prices in ₪, Hebrew/English input. The final sentence explicitly separates it from the guide siblings, so an agent can route without opening schemas.

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?

'Use when no guide covers the product' gives an explicit trigger condition and implicitly names the alternative (the guide tools in the sibling set). It stops short of stating when this tool is the wrong choice beyond that single condition, but the routing guidance is clear.

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