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

No annotations are provided, so the description carries the disclosure burden. It does state the included cost components and the parameter names, but it does not disclose whether the output is monthly or annual, whether employee-side deductions (INSS, IRRF) are excluded, or how defaults affect the result. This is adequate but sparse for a financial calculation tool.

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 compact: the first sentence states the purpose and cost components, and the second covers required/optional parameters plus a usage caution. It is front-loaded and contains no filler, although listing parameter names that already appear in the input schema is slightly redundant.

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?

With no output schema and a complex financial calculation, the description should state whether the returned cost is monthly or annual and what aggregate the agent should present to the user. It also does not clarify what happens when optional parameters are omitted, leaving a critical interpretation gap for such an involved calculation.

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 the schema already documents all six parameters with types, defaults, ranges, and regime-specific rules. The description only repeats the parameter names and adds a syntactic caution to use exact names, adding no semantic meaning beyond what the schema already provides.

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 ('Calcula'), a clear resource ('custo total de um funcionário CLT para a empresa'), and enumerates the cost components (encargos, FGTS, 13º, férias, provisões). This makes it easy to distinguish from sibling calculators like calculate_net_salary or calculate_hourly_wage, which target the employee side rather than the employer-side total cost.

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?

There is no explicit guidance about when to choose this tool over sibling calculators such as calculate_net_salary, calculate_annual_salary, or compare_clt_vs_pj. The phrase 'para a empresa' implies employer-side cost, but the description never states a decision rule, alternative, or exclusion, so an agent must infer the appropriate usage context.

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