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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds the content scope and the 'German content only' constraint, which is meaningful behavioral context, but says nothing about size, image payloads, or latency for a rich media response.

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?

Three short sentences that front-load the action and resource, then scope the content and the language limit. Little waste, though the hard-coded hotel name is a distraction that does not generalize.

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, the description usefully enumerates the returned content, and the single optional parameter is fully documented in the schema. The only real gap is the unresolved conflict between 'German content only' and the multilingual parameter.

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%, which normally sets a baseline of 3, but the description's claim of 'German content only' directly conflicts with the language parameter's documented de/en/nl enum for free-text fields. That misleading statement actively undermines the schema rather than adding to it.

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?

States a specific verb (fetch) and resource (GIATA property fact sheet) and enumerates the payload (descriptions, amenities, images, room classifications). It also draws a boundary against get_hotel_details by calling this 'marketing/classification data separate from operational hotel details', though the mention of one hard-coded hotel name muddies whether the tool is generic.

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 'separate from operational hotel details' phrase implicitly routes operational lookups to get_hotel_details, but there is no explicit when-to-use or when-not-to-use statement. Given five siblings, an agent must infer which cases warrant the fact sheet versus get_hotel_details.

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