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

With no annotations, the description carries the full burden of behavioral disclosure. It mentions the Open-Meteo dependency but says nothing about output format, errors, side effects, or that most schema parameters are discarded after checks. The schema descriptions hint at discarded inputs, but the main description does not.

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, front-loaded sentence with no filler or unnecessary detail. It is concise, though the brevity sacrifices needed usage and parameter guidance.

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?

For a 9-parameter tool with no annotations and no output schema, this description is too thin. An agent cannot reliably determine which input to provide, what the return value looks like, or why the other optional parameters exist, so the tool is not fully callable from 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?

Schema coverage is 100%, so the baseline is 3 and each parameter already has a description. The main description adds only the high-level 'place' concept but does not identify which parameter should be used for that place or how the parameters relate to latitude and longitude.

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 is a recognizable geocoding purpose. However it lacks an explicit verb and does not reconcile with the 9-parameter schema, where no parameter is clearly labeled as the 'place' and 'city' is described as a weather hint. It is only weakly differentiated from siblings like weather-hint.

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, which parameter to provide, or what kind of input counts as a 'place.' The description implies geocoding use, but the schema's many generic optional parameters make the intended selection criteria unclear.

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