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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, destructiveHint. Description adds 'free & anonymous (IP rate-limited)' and clarifies the output required for subsequent steps. No contradictions. Adds useful context.

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?

Two sentences with high information density. First sentence states purpose and parameters; second adds transaction loop context and cost/anonymity. No wasted words.

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?

Given 5 parameters with full schema coverage, no output schema, and moderate complexity, the description covers the tool's role, inputs, and integration point in the transaction sequence. Complete enough for an agent.

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 coverage is 100%, so the schema already describes all 5 parameters. The description summarizes the search dimensions but does not add significant new meaning beyond what is in the schema. Meets baseline.

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?

Clearly states it searches live products by multiple dimensions (keyword, destination country, supplier country, category) and that it returns product_id values for quoting. Distinguishes from siblings by explicitly naming the transaction loop sequence.

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?

Explicitly describes this as the first step of a buyer-side transaction loop (search_products → request_quote → list_quotes → place_order). Mentions free and anonymous with IP rate limits. Could improve by stating when not to use or alternatives, but context is strong.

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