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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the Open-Meteo dependency, but does not explain which inputs are consumed or discarded, whether this is a network call, what it returns, or how failures behave.

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, front-loaded sentence with no filler or repetition. It is appropriately sized for a simple statement of purpose, though it is too terse to be fully self-sufficient.

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?

This tool has nine optional parameters, no required fields, and no output schema, so the one-sentence description is not enough to guide a correct call. The agent is left uncertain about what to pass, what the response will look like, and how the parameters relate to the stated purpose.

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 coverage is 100%, so the baseline is 3 even without parameter details in the description. However, the description adds no value here: it does not map 'place' to a specific parameter such as city, nor does it clarify which of the nine optional fields should be provided.

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 communicates that the tool returns latitude and longitude for a place, and identifies Open-Meteo as the data source. It conveys the core function effectively, though it does not explicitly distinguish itself from sibling tools or say how the place should be supplied.

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 guidance about when to use geo-hint versus alternatives like weather-hint, and no mention of prerequisites or exclusions. The only implicit usage signal is needing coordinates for a place, which is not enough to route an agent confidently.

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