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

With no annotations provided, the description carries the full burden of behavioral disclosure. It fails to mention network dependency, rate limits, what happens to non-'place' parameters (discarded), or that Open-Meteo is an external API call. The schema descriptions allude to side effects (e.g., 'discarded', 'no disk access'), but the tool description itself adds no behavioral 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 one clean sentence with no verbal fat. It front-loads the core action and resource. The drawback is that it is so terse it omits all usage context, but as a concise line it is structurally efficient.

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 9 parameters, no annotations, and no output schema, this description is vastly incomplete. It does not tell the agent which parameter to populate, what output format to anticipate, or any constraints. A tool with this many inputs and a single one-line description is essentially unusable without further info.

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 each parameter already has a description. The tool description itself adds no mapping from 'place' to a specific field, e.g., 'city'. Since the schema does the heavy lifting, the baseline of 3 is appropriate.

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 specific action (returns latitude/longitude) and a resource (Open-Meteo), so the core purpose is identifiable. However, it does not map that purpose to any of the 9 input parameters, and nothing distinguishes it from siblings like weather-hint or timezone. The overly terse phrasing leaves room for ambiguity about which parameter is the actual 'place'.

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 when-to-use guidance is provided. There is no mention of when to choose this tool over siblings, which of the 9 (all optional) parameters are relevant, or what kind of input is expected. The description offers no usage context beyond an implicit 'for a place'.

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