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

The annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so 'Read-only (a search; nothing is booked)' largely restates structured data. The description does add real value by disclosing the response contents (per-product matching, availability, price range) and the prerequisite that occupancy keys come from bookingmood_get_product — but says nothing about rate limits, pagination, or performance/cost of a search.

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 returned information, then the read-only reassurance, then the occupancy note — each clause carries real meaning. The trailing 'POST /search' is a low-value implementation detail that slightly dilutes an otherwise tight description.

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?

There is no output schema, so the description's summary of the per-product result (match status, availability, price range) is necessary and present. Combined with the occupancy sourcing hint, an agent has enough to call it correctly; only the relationship to check_availability is left unstated.

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 carries start/end/occupancy/option_ids semantics and the baseline would be 3. The description adds a genuinely useful cross-reference: occupancy keys must come from bookingmood_get_product capacities, which tells the agent how to construct the nested map rather than guess UUIDs.

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 gives a specific verb+resource — searching bookable products for a stay — and even describes the per-product result shape (match on dates/guests/options, availability, price range {min, max}). It does not explicitly name the near-siblings bookingmood_check_availability or bookingmood_list_products, so the boundary must be inferred.

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?

Usage is implied rather than stated: it's a search for 'a stay' that is read-only, and the occupancy pointer to bookingmood_get_product capacities hints at a required pre-step. But there is no explicit 'use this when X, use check_availability when Y', even though a sibling with an almost identical name exists.

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