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

No annotations are supplied, so the description carries the full burden; it never states that this is a read-only lookup or what happens when a slug is unknown or misspelled. It does disclose the returned data fields, which is genuine value, but permission, error, and freshness behavior are all absent.

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?

One front-loaded sentence that states the resource and the three most decision-relevant metrics, with zero filler. Nothing could be removed without losing information.

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 single-parameter read tool with no output schema, naming the returned metrics is the critical missing piece and it is present. Only the relationship to the many overlapping siblings and the 'including' non-exhaustive phrasing keep this from being fully complete.

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% and the single parameter is documented with concrete slug examples ('dubai-marina', 'palm-jumeirah'), so the schema already does all necessary work. Baseline for a fully covered param is 3, but the schema's own examples make format expectations unambiguous without description support.

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?

"Get key facts about a Dubai community" gives a specific verb and resource, and it enumerates the payload (price per sqft, rental yield, Golden Visa status). It is clear on its own, but it never distinguishes itself from the overlapping siblings get_community, rental_yield_estimate, or check_golden_visa_eligibility.

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?

Framing this as "key facts ... including" implies a quick aggregated snapshot rather than a deep lookup, which is a form of implied usage. But there is no explicit when-to-use, no when-not-to-use, and no pointer to the sibling that returns full community detail or the dedicated yield/Visa tools.

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