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 behavioral disclosure. It only reveals the provider, Open-Meteo, and does not explain whether this is an external network lookup, whether it is read-only, what happens with unrelated-looking parameters, or what error/rate-limit behavior to expect.

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 text is a single short sentence with no filler and the core idea is front-loaded. It loses some credit because it is a fragment with no action verb, but it is appropriately compact for the little it conveys.

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?

For a tool with seven optional parameters, no output schema, no annotations, and many sibling hint tools, the one-line description is not sufficient. Critical details about which parameter to provide, what the returned hint contains, and why the schema has many unrelated-looking fields are all missing.

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?

All seven schema parameters have descriptions, which normally establishes a baseline of 3, but the tool description's 'place' maps to no obvious parameter. The only place-like field, city, is described as 'discarded after the call,' so the description and schema together do not tell the agent which input actually produces latitude and longitude.

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 is meant to supply latitude and longitude for a place and names Open-Meteo as the source. It is not a tautology, but it lacks an explicit verb and does not distinguish geo-hint from coordinate-adjacent siblings such as weather-hint.

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 choose this tool over weather-hint, timezone, or other sibling tools. No alternatives, exclusions, or contextual triggers are mentioned, so the agent is left to guess whether geo-hint is the right call.

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