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

No annotations are provided, so the description carries the full behavioral disclosure burden. It mentions Open-Meteo but does not describe whether the call is read-only, what happens on unknown places, whether any values are retained, or why the schema parameters are marked '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 description is one short, front-loaded sentence with no filler; it conveys the core function efficiently. It loses point only because brevity comes at the expense of operational detail.

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 seven parameters, no annotations, no output schema, and a large sibling-tool set, the description is not complete enough for correct invocation. It fails to state the required input, the expected output shape, or how geo-hint is meant to be selected over related tools.

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 has seven richly described parameters, but the description does not connect 'a place' to the city parameter. Most parameters appear unrelated to latitude/longitude and are explicitly marked as discarded, while city is also marked 'discarded after the call,' making it ambiguous which parameter actually drives the tool.

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 clear output (latitude and longitude) and source service (Open-Meteo) for a place, so an agent can grasp the high-level function. However, it does not specify which input parameter identifies the place, and it does not differentiate the tool from sibling weather-hint or timezone 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?

There is no guidance about when to use geo-hint versus alternatives, no stated prerequisites, and no examples. The single sentence only describes what the tool does, leaving the agent to infer selection criteria without support.

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