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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds one genuinely new behavioral fact — that only 'active' provinces are returned — plus the presence of pagination. It does not describe what a province record contains or ordering, which limits it to a 3.

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 no filler; the scope ('Indonesia', 'active'), the action, and the pagination caveat all earn their 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?

For a zero-required-parameter read-only list tool with full schema coverage and rich annotations, this is nearly complete. The only mild gap is that no output schema exists and the description doesn't hint at the shape of a returned province (name vs code), but that is minor for such a simple enumerator.

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%, so both 'page' and 'per_page' are already documented in the schema, including the max-100 cap and 1-based indexing. The description's mention of pagination merely echoes that; it adds no format or edge-case detail beyond the schema, so the baseline 3 applies.

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 and resource ('List all active provinces in Indonesia'), which clearly separates it from siblings like wilayah_get_provinsi or wilayah_list_kabupaten through the resource noun. It stops short of explicitly contrasting with the single-record getter or the other wilayah_list_* variants, so it doesn't quite earn a 5.

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 enumeration entry point for provinces, but the description never says when to choose it over wilayah_get_provinsi or wilayah_search. No exclusions, prerequisites, or alternative routing are stated.

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