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

With no annotations, the description should disclose side effects or read-only behavior; it only says coordinates are returned via Open-Meteo. Several schema descriptions ('discarded after the call') muddle what actually happens, reducing transparency.

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 concise and a single sentence, but it omits critical information about input and output. It is not bloated, yet the brevity works against clarity.

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 no output schema, no required parameters, and no annotations, the tool description should explain the expected input (e.g., a place name), return format, and behavior. It provides none of this, so an agent cannot call it reliably.

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 9 parameters have descriptions, most are irrelevant to geocoding (ref, feed, json, path) or misleading ('city' is described as discarded). The description does not clarify that the place is specified by one of these parameters, so the schema does not add useful meaning.

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 tool returns latitude and longitude for a place via Open-Meteo, but it lacks an explicit verb like 'get' and does not specify which input names the place. It is somewhat distinguishable from sibling tools but ambiguous.

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 for when to use this tool instead of related siblings such as weather-hint or timezone, nor any mention of required input like a city name or query.

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