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

Annotations already declare readOnlyHint and idempotentHint, so the safety profile is covered. The description adds valuable behavioral detail beyond annotations: returns up to 20 matches, orders by best match first, and discloses exactly what each result contains, including the total_before_tax calculation (price plus $19.99 delivery fee). This is substantial beyond the structured fields.

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: the first states the purpose and filters, the second covers result composition and pricing semantics, and the third states the result cap and ordering. There is no redundant or filler content; every sentence 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 no output schema, the description compensates by defining the key return fields, the pricing semantics, the 20-result limit, and match ordering. All 7 optional parameters are already documented in the schema, and annotations cover safety and idempotence. Nothing critical is missing for a read-only search tool.

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 high (86%), and the schema already documents each parameter with known values and formats. The description mostly restates the filter dimensions at a high level and adds the pricing formula that clarifies the 'budget' parameter semantics. Since the schema carries the parameter documentation burden, a baseline 3 is appropriate.

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?

The description uses a specific verb and resource ('Find flower arrangements in The Flowers Directory catalog') and enumerates the main filter dimensions. It also distinguishes itself from sibling tools by noting that results include the product code needed by check_delivery and get_checkout_link, making its role as the catalog search step clear.

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?

The description provides clear context for when the tool should be used: whenever an agent needs to find or search catalog arrangements. It implicitly routes the agent to sibling tools afterward by stating the result contains the product code they need. It does not explicitly state when not to use it or name alternatives, but the context is sufficient for a search-vs-delivery/checkout distinction.

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