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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does not mention that this likely makes an external Open-Meteo network call, whether inputs are discarded, whether there are side effects, failure modes, or what the returned coordinates look like. The one-sentence description adds minimal behavioral context.

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 clear sentence with no redundant wording, and the key idea is front-loaded. It is concise, though it achieves conciseness at the cost of important detail.

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, a single-sentence description is inadequate. An agent cannot tell which parameter to pass, what the output will be, or whether all parameters are just accepted for validation. Significantly more context is needed.

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 input schema has 100% description coverage, so the baseline is 3 even though the description itself adds no parameter-level guidance. However, the description does not clarify which of the 9 optional parameters identifies the 'place', and none of the schema parameter descriptions mention latitude or longitude, so the description fails to bridge the schema-to-purpose gap.

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 that the tool returns latitude and longitude for a place via Open-Meteo, which is a specific enough function to distinguish it from weather forecasting or timezone tools. However, it does not clarify how the 9 heterogeneous input parameters relate to 'a place', and the schema contains no obvious place parameter, making the core purpose somewhat vague.

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 this tool versus alternatives, when not to use it, or which input parameter should be provided. The description merely names the provider, not the selection criteria.

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