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

There are no annotations, so the description bears the full behavioral burden. It only reveals 'via Open-Meteo' and the output concept; it does not explain that most schema fields are unrelated or discarded, what happens for unknown places, network dependency, or the response format. This is under-disclosure, though not a direct contradiction of annotations.

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 short sentence with no fluff, which earns some credit. However, it is a fragment that lacks an imperative or clear structural front-loading, and its brevity comes at the expense of necessary context.

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 9 parameters, no annotations, and no output schema, this description is completely inadequate. An agent cannot determine which input to supply, what the tool returns, or how it differs from related sibling tools. The description must provide substantially more operational context.

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 baseline 3 applies. The description adds no parameter-level meaning beyond the schema and fails to connect 'place' to any specific field such as 'city'. Still, the schema itself provides descriptions for all parameters, so the gap is not in schema coverage.

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 names the output resource ('Latitude and longitude') and the external source ('Open-Meteo'), so the core purpose is inferable. However, it is a noun-phrase fragment rather than a clear action statement, and it does not specify which schema parameter represents 'a place', especially given many unrelated parameters like 'json', 'path', and 'zone'.

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?

The description gives no guidance on when to use geo-hint versus alternatives such as weather-hint or timezone. There are no exclusions, prerequisites, or routing cues beyond the vague phrase 'for a place'.

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