nws_aviation_sigmets

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

Annotations declare readOnlyHint=true, and the description adds value by specifying the return content (active SIGMETs with phenomenon type, timing, affected areas), which is beyond the annotation. No contradictions, but it omits details like data source scope or update frequency.

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 two sentences long, front-loaded with the core action in the first sentence, and the second sentence adds necessary return details. No redundancy or extraneous content.

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?

With zero parameters, read-only annotation, and no output schema, the description explains the core purpose and return fields, which is largely complete. However, given the close sibling faa_sigmet, a brief note about data source or temporal scope would enhance completeness.

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?

The tool has zero parameters, and the schema description coverage is 100% (empty schema). The description does not need to explain parameters, and the baseline of 4 applies since there are no parameters to describe.

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 retrieves current aviation SIGMETs, expands the acronym, and lists return fields (phenomenon type, timing, affected areas). It is specific about the resource and action, though it does not explicitly differentiate from the similar sibling tool faa_sigmet.

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 provides no guidance on when to use this tool versus alternatives like faa_sigmet or nws_alerts_active. It implies usage for current SIGMET retrieval but lacks explicit exclusions, prerequisites, or alternative references.

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