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

With no annotations, the description carries the burden of disclosing behavior, but it only mentions the use of Open-Meteo. It does not explain side effects, error behavior, what happens when no place is identified, or whether the operation is read-only.

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 compact and free of fluff, with one clear sentence. It loses a point only because the brevity omits essential usage information.

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 has nine optional parameters and no output schema, the description is too incomplete to enable correct use. It does not explain how to provide a place, what the response looks like, or what the 'discarded' parameters imply.

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 descriptions exist for all parameters, they are mostly unrelated to geocoding and several explicitly say the value is 'discarded after' a check. The description does not clarify which parameters are meaningful for geo-hint, so the schema adds confusion rather than useful input semantics.

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 conveys the core purpose. However, it does not specify which of the nine optional parameters should be used to identify the place, leaving the intent ambiguous.

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 such as weather-hint or timezone, nor any indication of which parameter to supply. The description simply states what it does, not when or how to invoke it effectively.

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