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

With no annotations, the description carries the full behavioral disclosure burden. It mentions output and provider, but not failure behavior, return format, external API implications, or how the many schema fields relate to the lookup. This is too thin for a network-backed tool.

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 direct sentence with no filler and is front-loaded with the key output. It is concise, though the conciseness comes at the cost of essential usage 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?

For a tool with nine optional parameters, no annotations, and no output schema, this one-line description is far from complete. An agent cannot determine which parameter to pass, what the response looks like, or how to handle invalid or missing place names.

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%, which usually earns a baseline of 3, but the parameter descriptions do not align with the stated purpose. Fields like ref, feed, json, path, and query appear unrelated to a latitude/longitude lookup, and the description does not map 'a place' to any parameter such as city.

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 that the tool returns latitude and longitude for a place, naming the external service Open-Meteo. This is a clear verb-plus-resource statement and gives the core purpose. It does not explicitly compare against siblings like weather-hint or timezone, so it is not a perfect 5.

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 prefer geo-hint over alternatives, which parameter should be populated, or what inputs are required. The schema contains nine optional fields with no direction on which one represents the place, leaving an agent to guess.

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