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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world, so the safety profile is covered. The description adds one genuinely useful behavioral fact beyond that: the content is the site's llms.txt summary and is in English. It says nothing about caching, freshness, or size, so it is adequate rather than rich.

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?

A single sentence that front-loads 'What MVR 19 is' and then lists the covered topics. The parenthetical source/language note is slightly buried but not wasteful; every clause maps to actual returned content.

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 and no parameters, the description carries the burden of telling the agent what comes back, and the topic list does that reasonably well. It omits any indication of format or length of the returned summary, which is a minor gap for a tool of this simplicity.

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?

The tool takes zero parameters, so there is nothing to disambiguate and the baseline of 4 applies. The description correctly implies the tool is parameterless by describing a fixed, self-contained summary.

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 enumerates exactly what the tool returns: the building, seven residences, prices, Golden Visa route and conditions, reservations, status, and developer. That is a concrete resource scope for the MVR 19 project. It does not, however, distinguish itself from siblings like get_page or list_residences, so sibling differentiation is left implicit.

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?

There is no statement of when to use this overview versus alternatives such as get_page, list_pages, or search_pages. The agent must infer that this is the entry-point summary, but nothing in the text confirms that or excludes other tools.

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