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

No annotations are provided and the description does not mention whether the tool performs a network call, is read-only, has side effects, or what happens on invalid input. The mention of Open-Meteo hints at an external call, but this is not explicit.

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 short and front-loaded with the main function. It avoids unnecessary detail and is easy to scan, though it sacrifices explanatory power for brevity.

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?

With nine optional parameters, no required fields, no output schema, and no examples, the description is far from complete. An agent cannot tell which parameters are actually used for the geo lookup or what result shape to expect.

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?

Although all nine parameters have descriptions, most are unrelated to geocoding (e.g., ref, url, json, path). The only relevant parameter, city, is described as a 'weather hint' rather than a place input for lat/long lookup, which would confuse an agent about which parameter to pass.

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 identifies the core purpose. However, it does not explicitly say what parameter represents the place or whether it handles addresses, city names, or coordinates, leaving some ambiguity.

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 explicit guidance on when to use this tool instead of siblings like weather-hint or timezone. The description implies a geocoding use case but does not state prerequisites, alternatives, or the appropriate input format.

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