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

No annotations are provided, so the description carries the full burden of disclosing behavior. It mentions the Open-Meteo dependency but does not state whether this is a network call, what happens to unused parameters, whether data is retained, or what the response format is. This is a significant transparency gap.

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 extremely short, with no wasted words. However, it is underspecified given the complex schema: a one-sentence description does not explain how to invoke the tool or which parameters matter, so this is conciseness through omission rather than effective economy.

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?

Given the 9-parameter schema, absence of an output schema, and no annotations, the description is far from complete. It does not explain how the place is specified, what output is returned, what external calls are made, or how geo-hint relates to the broader tool set.

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 the baseline is 3. The tool description adds no parameter-level meaning, but the schema already documents each parameter, including that most are discarded after checks. The description does not clarify that the 'city' parameter is the relevant one for the place lookup, but the schema covers this adequately.

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 clearly states the tool returns latitude and longitude for a place using Open-Meteo, which is a specific verb+resource. It distinguishes geo-hint from siblings like weather-hint and timezone, though it does not explicitly explain the relationship to them.

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 geo-hint versus weather-hint, timezone, or other sibling tools. No context, prerequisites, or exclusions are provided, leaving the agent to infer the appropriate use case.

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