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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety is covered. The description adds real behavioral value beyond that: the two-tier result ordering (8 curated flagship stays first, then ~2,000 catalog matches) and the presence of a fostay_url for human viewing/booking. It stops short of describing pagination or how the curated tier is selected.

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, zero filler, and the most decision-relevant facts (what it searches, the two-tier result shape, and the pricing alternative) are front-loaded. Every sentence earns its place.

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?

There is no output schema, and the description compensates well by describing the return composition and the fostay_url. For a simple 4-parameter search tool this is nearly complete; only pagination/curated-tier selection mechanics are left implicit.

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 city enum, limit bounds, query filter and min_rating scale are all already documented in the schema. The description adds no syntax or format detail beyond what the schema provides, so the baseline 3 applies.

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 and resource ('Search hotels in Dubai or Abu Dhabi') and immediately scopes the domain to two named cities. It also distinguishes itself from the sibling get_live_rates by naming it, so an agent can route correctly without opening 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?

Explicitly redirects pricing queries to get_live_rates, which is a genuine alternative and prevents misuse. It does not state when-not to use this tool or how it relates to siblings like prepare_booking or booking_status, so it falls short of a full when/when-not treatment.

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