Consultar SIGMET activos en Ecuador

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

Annotations already declare readOnlyHint/destructiveHint and openWorldHint, so the safety profile is covered. The description adds real value beyond that: it clarifies the 'empty' result means no active advisories (not an error) and constrains scope to one FIR, so no region argument is expected.

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?

Two compact sentences with zero filler, scope and coverage front-loaded before the empty-result caveat. Every clause earns its place.

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 an output schema present, return values need no explanation, and read-only annotations cover safety. The description supplies scope, coverage and empty-result semantics, leaving only alternative-selection guidance unaddressed, which is minor for a one-parameter read tool.

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% and the single 'format' enum is fully documented in the schema, so the baseline of 3 applies. The description adds nothing about output format or the text-vs-json distinction.

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?

States a specific verb+resource ('Active SIGMETs') with geographic scope pinned to Ecuador's single FIR (SEFG), and enumerates the phenomena covered (volcanic ash, turbulence, icing, storms). This lets an agent separate it from aviation siblings like get_metar and get_notam without inspecting any schema.

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?

Usage is only implied: an agent can infer this is the aviation-hazard product versus METAR/NOTAM, but the description never says when to reach for this tool instead of those, nor any conditions or exclusions. It is adequate but leaves routing to inference.

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