obter_resumo_financeiro

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

With no annotations, the description carries the behavioral disclosure burden. It clearly implies a read operation ('Obtém') and importantly discloses the single-day calculation quirk, which is a non-obvious behavioral trait. It lacks detail on permissions or errors, but this is adequate for a simple read 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 two sentences with no redundancy. The main purpose is stated first, followed by a necessary caveat. Every word contributes value, and the structure is clean and readable.

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?

The description covers the return contents (totals of payables, receivables, bank balance) and the single-day limitation, which is useful. However, the two boolean parameters could significantly alter the output and are undocumented. Since there is no output schema, this is a meaningful completeness 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 0%, so the description must compensate. It only provides meaning for the 'data' parameter via 'data de referência'. The boolean parameters 'apenas_resumo' and 'exibir_categoria' are entirely unexplained, leaving the agent without guidance on their purpose or effect.

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 verb 'Obtém' clearly indicates retrieval, and the resource 'resumo financeiro consolidado' is specific. It enumerates included components (contas a pagar, a receber, saldo bancário), which distinguishes it from sibling tools that list individual financial items.

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 note that OMIE calculates the summary for a single day (not a period) provides a clear contextual limitation, implicitly telling the agent not to use this for date-range queries. However, it does not explicitly name alternatives such as consultar_fluxo_caixa, so it falls short of a 5.

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