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 mentions 'via Open-Meteo,' implying an external lookup, but does not explain that many inputs appear to be discarded after validation, nor does it describe side effects, response format, error behavior, or privacy implications of sending city/URL/feed/path data to an external service.

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 very short and front-loaded, but for a tool with nine parameters, no output schema, and no annotations, this level of brevity is under-specification rather than effective conciseness. It lacks any structured or contextual detail that would justify its minimal length.

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 definition is incomplete for a tool with nine loosely related parameters and no output schema. It does not explain how the parameters map to 'a place,' what the response looks like, or what 'hint' means in the tool name. Including the broader context of the sibling tools would also help, since many siblings are shape-check utilities and geo-hint's role is unclear.

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 coverage is 100%, so the baseline is 3. The description adds no parameter-level meaning, but the schema already documents each parameter, including notes about values being discarded. The description does not help the agent decide which of the nine optional parameters to supply for a geographic lookup.

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, which names a clear result and service. However, it does not specify how a place is identified, and the input schema contains many unrelated-looking parameters (ref, feed, json, path), making the tool's actual scope unclear. It also does not differentiate it from siblings like weather-hint or timezone.

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 guidance on when to use this tool versus alternatives, no mention of when it should not be used, and no indication of which parameter is appropriate for a given use case. The description only implies a single purpose without contextual direction.

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