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

No annotations are provided, so the description carries the full burden of disclosing behavior. It mentions Open-Meteo, implying an external network call, but does not state failure modes, output format, rate limits, or how a 'place' is resolved.

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 single sentence is concise and front-loaded, with no wasted words. However, for a tool with nine optional parameters and no output schema, the brevity is under-specification rather than efficient completeness.

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 tool's complexity—nine optional parameters, no required fields, no output schema, and no annotations—the one-sentence description is not enough for an agent to safely invoke it. It fails to identify the target parameter or explain the return contract beyond stating latitude and longitude.

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 description does not connect 'a place' to any of the nine parameters. The schema contains city, url, host, zone, query, and others, many labeled as discarded after shape checks, which conflicts with the geocoding purpose described.

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 a specific outcome—latitude and longitude for a place—and names the external source, Open-Meteo. This is clear and distinct enough from sibling tools like weather-hint, though it does not explicitly reference any sibling or explain the 'hint' naming.

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 on when to use this tool versus alternatives, nor any indication of which input parameter should be supplied. The description simply states what the tool does without explaining when it is the appropriate choice.

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