Feriados Nacionais

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

No annotations provided, so description carries full burden. It mentions included holidays and optional facultative inclusion, but does not disclose data source, year availability, ordering, error behavior, or return format.

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?

Description is compact and front-loaded with the main purpose, comprising three clear sentences with no unnecessary words.

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?

Covers main functional aspects (scope, filters, default year behavior). Lacks explanation of output format or structure, which is acceptable given no output schema, but could mention if results are sorted or paged.

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?

Input schema has 100% coverage, so baseline is 3. Description rephrases schema information but does not add significant new meaning beyond listing example holidays and clarifying contextual use.

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 clearly states it lists all Brazilian national holidays for a specific year, lists example holidays, and distinguishes from sibling tools by specifying 'nacionais' and optional parameters.

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?

Provides clear context for using the tool (specific year, optional facultativos and bancarios parameters, default behavior when no year is given). However, does not explicitly compare with sibling tools like feriados_por_cidade or feriados_por_estado.

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