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

Annotations already establish readOnly, openWorld, and non-destructive behavior. The description adds useful detail: live external source, COP full-stay totals, room and rate names, date-prefilled booking links, and an explicit no-booking-confirmation guardrail. It omits auth, rate-limit, and freshness caveats, keeping it from a 5.

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, front-loaded with the core action and followed by output details and the booking boundary. No filler or repetition.

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?

Given read-only annotations and no output schema, the description explains return content and the booking boundary well. The remaining gap is parameter-level clarity for the hotel selection and guest breakdown, but overall it is sufficient for an agent to call the 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?

Schema description coverage is only 33%, with just checkIn and checkOut documented. The description says 'dates and guest counts' but does not explain the hotel enum values (both/COL/POR) or the adults/children/infants split and constraints, so it only minimally compensates for low schema coverage.

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 read action against live SiteMinder room rates and availability through Casona Direct Booking, scoped by dates and guest counts. It is clearly distinct from the experience-focused sibling tools and makes the 'never confirms a booking' boundary explicit.

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?

Provides clear context: use it to read live room rates for given dates and guest counts, and it will not confirm a booking. It does not explicitly name alternatives, but the sibling tools are experience-focused, so the omission is minor.

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