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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and non-destructive behavior. The description adds behavioral details beyond those annotations: the result set is specifically recently published datasets rather than all datasets or recent changes, and results are sorted newest first.

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 one concise sentence that front-loads the action and resource, then adds the source and sort order efficiently. The parenthetical about the Portuguese government open data portal is slightly redundant but still compact.

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 tool with no required parameters, the description plus schema fully characterize how to invoke it. There is no output schema, so a clearer statement of the returned fields would improve completeness, but the term 'datasets' conveys the essential return value.

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?

The single parameter page_size has 100% schema description coverage, including range and default value. The description itself adds no additional parameter semantics, which matches the baseline for fully documented schema parameters.

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 opens with a specific verb and resource: 'Get the most recently published datasets' from dados.gov.pt, and even states the sort order. It clearly differentiates this from search_datasets by emphasizing recent publication rather than query-based search.

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 the tool is for browsing the newest dataset publications, but it does not explicitly say when to choose it over siblings like search_datasets or recent_changes, nor when not to use it. No exclusions or alternatives are mentioned.

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