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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only states the tool finds an address but does not disclose whether it is read-only, any side effects, or the format or range of return values. The agent lacks critical safety and output expectations.

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 key information: verb, resource, and input. There is no redundancy or unnecessary detail.

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 two-parameter tool, the description covers the main purpose and geographic scope (Luxembourg). However, it lacks details on the return format, behavior for invalid coordinates, and whether multiple results are possible. Without an output schema, more context is needed for complete understanding.

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?

The schema has 0% description coverage, so the description must add meaning. It specifies that the coordinates are in 'WGS84', which provides essential context for the latitude and longitude parameters. However, it does not explain valid ranges or format requirements, leaving some ambiguity.

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 tool's function: reverse geocoding to find the nearest official Luxembourg address from WGS84 coordinates. It uses a specific verb ('Find') and resource ('nearest official Luxembourg address'), and the name 'reverse_geocode' distinguishes it from the sibling 'geocode_address'.

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 the tool is for reverse geocoding, which is clear from the context. However, it does not explicitly mention when to use it over alternatives like 'geocode_address' or provide any exclusions. This is adequate for a tool with a straightforward name and purpose.

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