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

No annotations are provided, so the description carries the full behavioral burden. It discloses that Open-Meteo is used, implying a network call, but it does not explain failure behavior, response format, rate limits, or that most of the 9 schema parameters are irrelevant and discarded.

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 single, front-loaded sentence with no wasted words. It is concise, but it omits usage and behavioral details that would make it genuinely helpful.

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 9 optional parameters, no required fields, no output schema, and no annotations, this one-line description is not complete enough. An agent cannot reliably tell which parameter to pass, what the output structure will be, or how failures are surfaced.

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 coverage is 100%, so the baseline is 3. The description adds no parameter-level meaning beyond the schema; while 'place' hints at the city parameter, it does not clarify which of the 9 optional parameters actually drive the lookup or how they should be formatted.

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 concrete action and result: returning latitude and longitude for a place via the Open-Meteo service. This distinguishes it from weather-hint or timezone siblings by domain, though it does not explicitly name the input parameter such as 'city' or describe the return shape.

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?

No guidance is given about when to use geo-hint versus weather-hint or other sibling tools, nor any exclusions or prerequisites. The agent must infer from the tool name and sibling list that this is a geocoding lookup.

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