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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered by structured data. The description adds real semantic context (the geographic meaning of «locales» and «regionales») and implies recency ordering, but says nothing about pagination limits, refresh behavior, or what the result set looks like.

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?

Front-loads the core purpose and packs the section disambiguation into one efficient sentence. The trailing English gloss '(Latest news, optionally by section.)' is mildly redundant but small, so structure remains tight overall.

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 no output schema and full annotation coverage, the description supplies everything an agent needs: what it returns (latest news), the optional filter, and the meaning of the ambiguous section values.

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 coverage is 100%, so the enum values and the cantidad bounds are already documented, putting the baseline at 3. The description goes beyond that by clarifying that «locales» means Río Tercero and «regionales» means the region and Córdoba, disambiguating two enum values the schema only labels generically.

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 and resource: fetching the most recent news from Cadena Láser, either site-wide or filtered by section. The scope is clear enough to distinguish from leer_nota (read a specific note) and radios, though it never explicitly contrasts itself with buscar_noticias, the closest sibling.

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 implied ('de todo el sitio o de una sección') but there is no explicit when-to-use guidance, no statement of when to prefer buscar_noticias or leer_nota instead, and no prerequisites. Adequate but leaves the choice among siblings to inference.

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