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

With no annotations, the description carries the full burden of disclosing side effects and behavior. The only behavioral clue is 'via Open-Meteo,' implying an external API call, but nothing about input handling, error conditions, network dependencies, or whether values are 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 single sentence is tightly written, front-loaded, and free of filler. It is economical enough; the main issue is that it is too sparse for the tool given the rich and ambiguous input schema.

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?

Given the 9-parameter schema, 0 required inputs, no output schema, and no annotations, the description is insufficient for an agent to reliably invoke the tool. The agent cannot identify the appropriate parameter and does not know what return value or error 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?

Schema description coverage is 100%, so the baseline is 3. The description itself adds no parameter-level meaning, so it does not help map the word 'place' to the city parameter or any other feasible input.

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 gives a clear capability: obtain latitude and longitude for a place via Open-Meteo. It states a specific verb-object relationship and is not a tautology. However, it does not clarify which of the nine input parameters represents the 'place' or differentiate itself from sibling weather/shape tools.

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 call this tool versus alternatives. An agent cannot determine whether geo-hint should be selected for a city name, a URL, or an arbitrary place string, nor when to prefer it over siblings like weather-hint or the other shape-check tools.

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