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 the 90-day max constraint and what fields are excluded from the response, which is useful behavioral context. But it does not mention pagination, response shape (though output schema exists), or any error conditions. Given the annotations, a 3 is appropriate.

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 a single well-structured sentence that front-loads the core purpose and then adds relevant exclusions. No wasted words, and it reads efficiently.

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 read-only filtered-list tool with full schema documentation and an output schema present, the description covers the essential scope, constraints, and exclusions. Nothing an agent needs to call it correctly is missing.

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 each parameter (hotelId, ratePlanId, dateFrom, dateTo) already has a clear description and format. The description adds no per-parameter meaning beyond what the schema provides; it only reiterates the date-range and single-rate-plan context. Baseline 3 is correct.

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 states a specific action ('List') on a clear resource ('per-day price and stay restrictions of one organization-owned rate plan') with explicit scope (date range up to 90 days). It clearly distinguishes from siblings like list_rate_plans (which lists rate plans) and get_hotel_schedule_summary (which summarizes schedules), so an agent can tell this apart without opening any schema.

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 implies usage constraints: it applies to a single rate plan and a date range of at most 90 days, and it excludes guest, payment, channel, credential, and arbitrary metadata. However, it does not explicitly name alternative tools or state 'use this when...' vs. 'use that instead...'. Guidance is present but implicit, not direct.

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