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

With no annotations provided, the description carries the behavioral disclosure burden. It adds meaningful context by stating that only a coarse availability band is exposed and that exact unit counts are not published. This sets accurate expectations about the tool's limitations without contradicting any structured metadata.

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 well-structured sentences deliver the core purpose, output content, and filtering options without wasted words. The caveat about coarse availability is woven in neatly rather than adding clutter.

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-optional-parameter listing tool with no output schema, the description is largely complete: it names the return content, the granularity of availability, and the available filters. It falls slightly short only because it does not explicitly distinguish itself from sibling tools or state when not to use it.

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 both parameters, including the notable studio/0-or-1-bedroom nuance. The description reiterates that filtering is optional but adds little semantic value beyond the schema.

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 'Lists' and identifies the exact resource: over-water home product types currently offered. It enumerates the returned fields (model name, availability band, size, features, starting price), clearly separating this inventory-browsing tool from pricing, unit-details, and inquiry siblings.

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 implies usage: use this to browse or filter current product types. It states optional filters but does not explicitly say when to prefer this over get_pricing_and_deposit_policy, get_unit_details, or submit_inquiry, nor does it mention any exclusions.

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