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

The annotations already declare readOnlyHint=true and destructiveHint=false, so the description's '(solo lectura)' mostly repeats structured data. It does add useful scoping context by specifying published and public posts, but it omits ordering guarantees, default limit behavior, and whether unpublished or private posts are ever included.

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?

The description is a single front-loaded sentence that is efficient and easy to parse. The parenthetical '(solo lectura)' is slightly redundant given the annotations, but overall the sentence 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?

For a simple read-only list operation with two optional, fully documented parameters, the description provides enough context to invoke it correctly. The lack of an output schema means return shape is not specified, but for this tool's complexity that is a minor gap.

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 parameters are fully documented in the schema with ranges and an enum. The description adds no additional meaning about how limit or post_type interact with the 'latest published public' filtering, leaving it at the baseline.

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 states a specific verb and resource: it returns the latest published and public blog posts. This clearly differentiates it from get_post (single post) and search_posts (search) by emphasizing recency and public visibility, though siblings are not named explicitly.

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 by 'últimas entradas' and the public/published filter, but there is no explicit guidance on when to choose this tool versus search_posts or get_post. An agent can infer the use case but must reason about alternatives without direct instruction.

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