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

Annotations already declare readOnlyHint/openWorldHint/destructiveHint, so the safety profile is covered. The description adds real behavioral context beyond that: the data is a reported schedule the operator may change (volatility), and Early Entry is an eligibility-based window rather than a ticketed event, which shapes how the result should be interpreted.

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 sentences, front-loaded with the trigger condition, and each sentence carries domain-relevant information (prerequisite, category semantics, data volatility). No filler, though the Early Entry clarification is fairly niche for the general case.

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, so the description does well to signal what the return contains (schedule windows with guest-facing categories and labels). Combined with annotations covering the safety profile and full schema coverage of inputs, an agent has enough to call and interpret it; only the exact output shape remains unspecified.

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 every parameter is already documented in the schema, and the description adds only the 'seven park-local days' scope that mirrors the days maximum. The 'park-local' and 'resolve park ID first' hints are useful but marginal against a fully documented schema, 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?

The description states a concrete verb (get) and resource (operating hours for one supported park) with an explicit scope (next seven park-local days), plus the title reinforces it. It does not name any sibling, but the resource domain (hours vs. waits vs. crowd outlook vs. find_experience) is distinct enough that an agent can route correctly.

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?

It gives a clear trigger condition ('use this when a visitor asks about operating hours') and a prerequisite ('resolve the park ID first'), which is genuine usage guidance. It does not name a specific alternative tool or state when not to use it, so it stops short of a 5.

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