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

The annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is fully covered without the description. The description adds value by identifying the upstream source (BMKG) and the hazard categories, but says nothing about pagination behavior or how many warnings typically return.

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?

A single front-loaded sentence with the resource scope first, the optional filter second, and provenance last. No wasted wording, though the parenthetical hazard list is somewhat decorative rather than operational.

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 read-only, parameter-light list tool whose annotations already carry the safety profile and with no output schema to explain, this is close to sufficient. The remaining gap is that an agent cannot tell what a returned warning record contains or whether results are paginated beyond the defaults visible in the schema.

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 only 33% — only `provinsi` is documented, while `page` and `per_page` carry no descriptions in the schema. The description corroborates that province filtering is optional and partial-match-ish in spirit, but does not explain the pagination parameters that the schema leaves bare.

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 pairs a specific verb ("List") with a specific resource ("active BMKG early weather warnings") and clarifies the domain with concrete hazard examples (banjir, longsor, puting beliung). It is clearly distinguishable from siblings like cuaca_forecast or gempa_terkini, though it never explicitly names an alternative.

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?

"Optionally filtered by province" implies the intended usage context (browsing warnings nationally or narrowing to one province), but there is no explicit when-to-use/when-not guidance and no reference to sibling tools such as cuaca_forecast.

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