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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds useful behavioral context beyond those flags: it describes what the user experiences on the landing page (review ticket categories, auto-loaded nearby hotels, self-booking), and clarifies that hotel_id pins a hotel at the top of the list. This is meaningful extra transparency.

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?

The description is four sentences, each earning its place: the purpose, the landing-page experience, the hotel_id behavior, and the explicit non-reservation caveat. It is front-loaded with the core verb and resource, then adds necessary context without padding.

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 link-generation tool with 100% schema coverage and no required parameters, the description is largely complete. It explains the outcome, the user-facing page, the optional hotel pinning, and that no reservation occurs. It does not mention the response format (the URL itself), but 'Generate a deep link' sufficiently implies the return value, and the annotations cover the safety profile.

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 every parameter is already documented in the schema. The description does repeat the hotel_id pinning behavior that the schema already states, adding little new semantic value. It does not introduce new meaning for guests, check_in, or check_out beyond what the schema provides, so the baseline 3 is appropriate.

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 opens with a specific verb and resource: 'Generate a deep link to the Event Escapes event detail page.' It also distinguishes itself from the sibling by stating 'Package pages are linked by build_package_link,' so an agent can tell which tool handles which page type without inspecting schemas.

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 explicitly says this is a navigation link only and does not make a reservation, which tells the agent when not to use it for booking actions. It also names the alternative for package pages ('Package pages are linked by build_package_link'), giving clear routing guidance.

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