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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is covered. The description adds genuine context beyond that by clarifying the business consequence: sharing these links does not create a reservation, which matters for an agent drafting guest messaging.

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?

Front-loaded with the action and resource, and the two clauses (what you get, what it does not do) each earn their place. Slightly dense as a single semicolon-chained sentence, but no filler.

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?

No output schema exists, and the description compensates by naming the categories of pages returned, which is the key thing an agent needs to cite them in a guest message. It stops short of stating the return shape (e.g., URLs vs. titles), which is a minor gap for a zero-param tool.

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?

Zero parameters, so there is nothing to disambiguate and the baseline of 4 applies. The description correctly implies a no-argument call by describing a fixed set of five pages.

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?

Specific verb+resource ('Get the five public Casona Signature guest-shareable service pages') with the exact contents enumerated (menus, spa, extras, tours/islands, transportation). Clearly distinguishable from siblings like search_experiences or draft_experience_quote, which are search/quote actions rather than a fixed page fetch.

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?

'suitable for pre-arrival guest messaging' gives a concrete use context, and 'sending links never reserves services' heads off a common misuse (treating link sharing as a booking). No explicit exclusion against sibling tools, but the fixed-page nature of the tool makes overlap unlikely.

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