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 does not mention network calls to Open-Meteo, parameter discard semantics (even though the schema notes some are discarded), or any side effects. The agent is left with no understanding of the tool's runtime behavior.

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 sentence, but it is under-specified rather than concise. It omits essential information about input selection and behavior, so brevity does not serve the agent. Appropriate conciseness would include the key parameter or usage pattern.

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?

With nine parameters, no output schema, and no annotations, the description is severely incomplete. It does not explain return format, required input, or parameter relationships. An agent has no chance of invoking this tool correctly based on the description alone.

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 the baseline is 3, but the tool description adds no meaning about how the nine parameters map to retrieving a place. The schema descriptions themselves are contradictory (e.g., city is described as 'for a public weather hint'), and the description does not clarify which parameter yields the coordinates. Thus, the description fails to bridge the semantic gap.

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 returns latitude and longitude for a place via Open-Meteo, which is a concrete outcome. However, it does not specify which input parameter identifies the 'place' (e.g., city, host, path, query), leaving the invocation unclear. It is not a tautology, but it lacks the specificity needed to distinguish from siblings like weather-hint or timezone.

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?

No guidance is given on when to use this tool versus alternatives. There is no mention of conditions, exclusions, or sibling tools, so an agent cannot decide between geo-hint and other hint tools based on the description.

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