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

With no annotations, the description must carry behavioral disclosure, but it only reveals the use of Open-Meteo and the high-level result. It does not mention response format, network/failure behavior, rate limits, or that most schema fields appear to be ignored for this tool.

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 short, front-loaded phrase with no filler. It is concise, though it is a noun phrase rather than a complete imperative sentence.

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 a complex 9-parameter schema, no annotations, and no output schema, the description is too thin to support reliable invocation. It should identify `city` as the input, clarify that other fields are irrelevant, and describe the returned coordinate format.

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 already describes all 9 parameters (100% coverage), so the baseline is 3. The description adds no mapping between 'a place' and the relevant parameter, but since the schema bears the documentation burden, there is no penalty below baseline.

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 deliverable (latitude and longitude) for a place, and names the underlying service (Open-Meteo), which helps distinguish it from siblings such as weather-hint. It lacks a verb and does not identify the `city` parameter as the location input, so it is clear but not maximally specific.

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 geo-hint versus weather-hint or any other sibling. The description also does not indicate which of the nine schema parameters should be supplied, and all parameters are optional.

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