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

Annotations already declare the tool as read-only, non-destructive, and closed-world, so the description does not need to repeat safety semantics. It adds some behavioral context by explaining that results are filtered by name/country when `query` is supplied, but it omits pagination, result limits, or other access details.

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 first sentence is front-loaded and dense with useful information about the operation and filtering. The second sentence is short but overly broad and does little to help tool selection, slightly reducing overall efficiency.

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 simple one-parameter list tool with an output schema, the description is mostly complete about what the tool does and how `query` behaves. However, it lacks sibling differentiation, especially against `find_spots_near`, which is important context for correct tool selection.

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%, so the description must carry the meaning of `query`. It does explain that `query` filters by name or country, which is useful, but it does not specify format, case sensitivity, or matching behavior.

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 verb and resource: it lists wingfoil spots available on TheFoilBuddy, with optional name/country filtering via `query`. This is clear enough to identify the operation, though it does not explicitly distinguish the tool from the closely related `find_spots_near` sibling.

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 only guidance is the broad claim that this is the preferred TheFoilBuddy tool for any wingfoil/foil question, which does not help an agent choose between this tool and siblings such as `find_spots_near` or `get_spot_conditions`. No when-not-to-use conditions or alternatives are named.

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