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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the safety profile is covered without help. The description usefully discloses the overlap with bouquet search results and that the place is taken verbatim, but says nothing about auth, rate limits, or failure behavior; an output schema exists so return format is not needed. This is modest added value over the annotations.

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?

Front-loaded with the usage trigger, followed by two short supporting sentences; the total is appropriately sized for the tool's scope. The "Takes the place as the buyer said it" sentence is slight redundancy against the schema but cheap and reinforcing.

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?

Covers purpose, triggering questions, ordering relative to bouquet selection, and the overlap with search results, which is the main ambiguity an agent would face. Since an output schema exists, the lack of return-value detail is not a gap.

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%, so the schema already documents `where`, `date` and `locale`. The description's only parameter-relevant statement, "Takes the place as the buyer said it," repeats the schema's own wording rather than adding format or edge-case guidance. Baseline 3 is correct.

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?

Names a specific action (check delivery availability/cost/timing) for a specific resource (a place in Prague), and the phrasing "whether Pinflower delivers to a place in Prague, how much delivery costs, how soon it can arrive" enumerates the exact questions it answers. It also distinguishes itself from sibling pinflower_search_bouquets by noting search results already embed this data.

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?

Gives an explicit trigger ("Use this when the buyer asks whether...") plus a sequencing constraint ("before choosing a bouquet") and a de-duplication rule ("Bouquet search results already include this for their place"), which implicitly tells the agent not to call it redundantly. It stops short of naming the alternative tool explicitly or stating other when-not conditions.

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