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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds that results include summary, involved parties and countries, and bounds archived items to the last 30 days, but that window is ambiguous relative to the status enum.

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 the purpose front-loaded. The English line largely duplicates the Portuguese one, which is mildly redundant but aids non-Portuguese readers given the Portuguese domain vocabulary.

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 simple read-only listing tool with full annotation coverage and no output schema, the description supplies the key return-field summary, which compensates for the missing output schema. Only the exact relationship between the 30-day window and the status filter remains fuzzy.

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 'status' enum is already documented in the schema. The description mentions active/archived but adds no syntax or behavioral nuance beyond what the enum description provides, so baseline 3 is appropriate.

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 ('Lista') and resource ('temas'), and defines what a tema is (developing case with multiple stories over days), which is genuinely clarifying for this domain. However, it does not explicitly differentiate itself from the singular sibling get_tema or from ultimas_historias/buscar.

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 implies when it applies via the 'active or archived in last 30 days' scope, but gives no explicit guidance on when to prefer it over buscar or ultimas_historias. Usage is inferable rather than stated.

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