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

With no annotations, the description must disclose behavior itself, but it only mentions the data source. It fails to mention that most schema fields are described as discarded after checks, that the tool presumably makes an external Open-Meteo request, or how it behaves when no parameters are supplied.

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 concise sentence with no filler or redundant wording. It is structurally clean, though its brevity sacrifices the practical guidance needed for a tool with this ambiguous schema.

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 the complexity of nine optional parameters and no output schema, the description is insufficiently complete. It does not specify required inputs, how to construct a valid request, what the returned latitude/longitude format looks like, or how errors or missing place data are handled.

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?

Although schema coverage is 100%, many parameter descriptions (e.g., 'Git ref name; discarded after the shape check', 'HTTPS URL to normalize or cite') are unrelated to a geographic place and provide no usable semantics. The tool description does not clarify which of the nine optional fields actually determine the location, leaving parameter selection ambiguous.

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 the tool's core function—returning latitude and longitude for a place via Open-Meteo—which is reasonably clear and distinct from weather-focused siblings like weather-hint. However, it lacks an explicit verb like 'gets' or 'returns' and does not mention which input identifies the place.

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 gives no guidance on when to use this tool versus alternatives, and it does not explain which of the nine optional parameters should be provided. A user cannot tell whether to pass 'city', 'query', 'zone', or something else, and no sibling-tool comparison is offered.

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