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

Annotations already declare readOnly, idempotent, non-destructive, closed-world. Description adds meaningful behavior: validation scope, that a link (not quote/reservation) is returned, and domain rules for round trips, cabin 'comfort', childAges and lap infants.

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?

Four tight sentences: purpose first, then return behavior, then key constraints. Every sentence adds a distinct piece of information without 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?

No output schema, but description states the return is a search link and not quotes/reservations. With 10 required params and no schema descriptions, it covers the important domain semantics but leaves some parameter specifics (e.g., market, exact counts) to the schema's patterns and bounds.

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 has 0% description coverage, so the description must carry parameter meaning. It clarifies tripType, segments rule, comfort=premium economy, and child/infant rules, but omits meaning for market, language/currency beyond 'validate', and adult/child count limits.

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 'prepare' and resource 'personalized Mubboo Flights search' plus supported trip types. It is clearly distinct from find_airports and get_service_info in function, though it does not name or contrast those siblings.

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?

Explains the context: returns a link for the traveler to compare options and explicitly excludes quotes/reservations. It does not name alternative tools or specify when another sibling should be used instead.

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