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

No annotations are provided, so the description must carry the full behavioral burden. It only mentions the core function and the data source (Open-Meteo). It does not disclose side effects, required inputs, rate limits, or what happens on failure. The description is far too minimal for a tool with no annotation safety hints.

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 a single, compact sentence that immediately states the purpose. It is front-loaded and avoids redundancy. However, its brevity comes at the cost of clarity regarding the schema, so while concise, it is not optimally structured for usability.

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, the description is severely incomplete. It does not explain how the place is specified (which parameter to use), what the output format is, or any constraints. An agent would struggle to use this tool correctly based on the description alone.

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 schema covers 100% of parameters with descriptions, so the baseline is 3. The description adds no extra meaning beyond the schema. It doesn't clarify that 'city' is likely the primary parameter for the geo lookup, nor does it explain the role of the other eight parameters. The description adds minimal value over the schema.

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 verb and resource: it returns latitude and longitude for a place via Open-Meteo. This is clear and unambiguous, but it doesn't distinguish from siblings like weather-hint, and the schema includes many unrelated parameters, so the agent may not know which parameter to use.

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 like weather-hint. No context about appropriate scenarios, prerequisites, or exclusions is provided. The agent is left to infer usage from the name and description.

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