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

No annotations are present, so the description carries the full burden of behavioral disclosure. It names Open-Meteo as the source but does not disclose the return format, network dependency, failure behavior, or that input values are discarded after the operation.

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?

One short sentence that front-loads the core purpose and provider. It is appropriately concise, though it sacrifices useful details better covered under other dimensions.

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 nine optional parameters, no output schema, and no annotations, the description is too thin to let an agent confidently invoke the tool correctly. It does not explain the result format or which input parameter represents the place.

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 100% description coverage, so the baseline is 3 even without parameter details in the tool description. The description adds no extra parameter guidance and does not clarify which of the nine optional fields supplies the 'place,' creating potential 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 states the tool provides latitude and longitude for a place via Open-Meteo, which is clear and distinguishes it from weather-hint and timezone siblings. It lacks an explicit verb like 'get' or 'resolve,' so it is not a 5.

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 phrase 'for a place' implies the tool should be used when an agent needs coordinates of a location. However, it does not state when not to use it, mention prerequisites, or name alternative tools for related lookups.

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