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caiyunapp

Caiyun Weather MCP Server

Official
by caiyunapp

get_weather_alerts

Retrieve weather alerts for any location using latitude and longitude coordinates.

Instructions

Get weather alerts for the location.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
lngYesThe longitude of the location to get the weather for
latYesThe latitude of the location to get the weather for
Behavior2/5

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

With no annotations, the description fails to disclose behavioral aspects such as data source, update frequency, or whether alerts are current. It adds minimal value beyond the tool name.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single short sentence, which is concise but lacks detail. It is not verbose, but it could benefit from more structured information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simplicity of the tool (2 params, no output schema), the description is adequate. However, it omits relevant context such as what constitutes an alert or whether it returns only active alerts.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with basic descriptions for lng and lat. The tool description does not provide additional semantic meaning, so the baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb ('Get') and resource ('weather alerts'), and specifies the location scope. However, it does not differentiate from sibling tools like get_realtime_weather or get_hourly_forecast, which also retrieve weather data for a location.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. The description does not mention any prerequisites, limitations, or contextual cues for selecting alerts over other weather data.

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

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