Current Weather

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

Annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false. The description adds value beyond these by specifying the exact return fields and example weather states, which is useful for an agent to interpret results. It does not cover units or potential caching, but the added context is meaningful.

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 compact and front-loaded, stating the purpose in the first clause and then listing return values in a clear, scannable format. Every sentence adds useful information with no redundancy.

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 zero-parameter, read-only weather tool with annotations covering safety, the description is fully adequate. It explains what the tool returns, where the location comes from, and gives examples of weather states. No output schema exists, but the description fills that gap sufficiently.

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?

With zero parameters, the description does not need to explain parameter behavior. The baseline of 4 is appropriate since there is no schema coverage gap to compensate for. The description clarifies that location is fixed to Homey's location, which is sufficient.

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 uses a specific verb ('Get') and resource ('current weather conditions at Homey's location'), and explicitly lists the returned data fields (temperature, humidity, pressure, wind, weather state). This clearly distinguishes from the sibling tool get_weather_hourly by emphasizing 'current' conditions.

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 implies usage for current weather but does not explicitly state when to use it over alternatives like get_weather_hourly. There is no mention of excluding forecasts or historical data, so guidance is implied rather than explicit.

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