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

Annotations already declare readOnly, idempotent, openWorld and non-destructive, so the safety profile is covered. The description adds real value beyond that: it identifies the data source (published agency dataset), notes source/freshness metadata is returned, and warns that empty reports do not establish safe conditions — a genuinely important interpretive caveat for an alerts tool.

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?

Purpose is front-loaded in the first sentence and the caveat follows immediately. The units line ('ft, kt, s, F, mi; directions FROM') is generic and only loosely tied to this tool's output, but overall the text is compact with little waste.

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?

With no output schema, the description partially covers returns ('data and source/freshness metadata') but leaves the shape vague, and both filter parameters remain undocumented. For a simple read-only tool this is adequate but has clear gaps an agent would have to probe at runtime.

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 0% and the single nested query object exposes bbox and category with no documentation anywhere. The description says nothing about either parameter's format, semantics, or filtering behavior, so it fails to compensate for the schema gap.

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 resource ('Coastal national park alerts and closures') and its provenance ('published agency dataset'), which naturally separates it from sibling alert tools like get_marine_alerts and get_navigation_notices. However, it never explicitly names or contrasts those siblings, so an agent must infer the boundary itself.

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?

There is no when-to-use guidance, no prerequisites, and no alternatives named. The caution 'Empty reports do not establish safe conditions' is a data caveat, not usage guidance, and does not tell the agent when this tool is the right choice over the many other alert/hazard siblings.

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