apple_maps_reverse_geocode

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

With no annotations, the description must disclose behavior. It does list the return fields (place name, type, address, timezone, etc.), which is useful, but it omits any mention of error cases, coordinate validity requirements, or whether the operation is read-only. It does not contradict annotations (none exist), but it could be more transparent about edge cases and response shape.

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, efficient sentence that front-loads the action and then lists the return contents. It has no fluff or redundant phrases, and is appropriately sized for the tool's simplicity. It could be slightly improved with bullet points for readability, but it is already well-structured.

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?

Given that there is no output schema, the description must explain the return value, which it does by listing the components. However, it does not mention potential failure modes (e.g., no match found), coordinate range constraints, or the fact that lang and country are optional with defaults (though these are in the schema). Overall, it is reasonably complete for a simple geocoding tool but leaves some gaps.

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 all four parameters are already documented. The description adds no additional meaning beyond what the schema provides; it merely refers to 'a coordinate' without elaborating on format or interactions between parameters. This meets the baseline for full schema coverage but does not exceed it.

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 clearly states the action (reverse-geocode) and resource (Apple Maps), and enumerates the output components. It is specific and unambiguous, though it does not explicitly differentiate from sibling geocoding tools like geocoding_reverse or yelp_geocode, which are similar but use different providers.

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 provides no guidance on when to use this tool versus alternatives. It does not mention any conditions, prerequisites, or exclusions, and does not reference sibling tools. An agent receives no help in deciding between apple_maps_reverse_geocode and other geocoding tools.

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