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 says it provides coordinates via Open-Meteo, without revealing that it makes an external call, how it handles inputs (e.g., which parameters are used or discarded), or what output it produces. This is a significant gap for a tool with nine parameters.

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 concise sentence, which is efficient, but it is under-specified for a tool with nine parameters. It is not overly verbose, but it lacks crucial information. The brevity does not earn its place because it omits necessary context.

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?

The tool has nine parameters, no annotations, and no output schema. The description is completely inadequate for an agent to know how to call it correctly. It does not specify which parameters are relevant, how to provide the place, what the return format is, or any side effects. This is a major incompleteness given the complexity.

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 already has 100% description coverage, so the baseline is 3. The tool description does not add any parameter semantics beyond the schema, and it does not clarify which parameter maps to 'a place' (e.g., 'city' or 'query'). However, since the schema covers each parameter, the description is not required to repeat them. It adds minimal value beyond the schema.

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 specific verb and resource: providing latitude and longitude for a place via Open-Meteo. It is clear but does not differentiate from sibling tools like weather-hint or timezone, which also deal with location data. It is not a tautology and gives the core purpose, though sibling differentiation is absent.

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 on when to use this tool versus alternatives. There is no mention of conditions, exclusions, or when to prefer other siblings such as weather-hint or timezone. The description leaves the agent to infer usage context entirely.

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