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

Despite strong annotations (readOnlyHint, idempotentHint, destructiveHint), the description adds substantial behavioral context: the module is read-only 'por decisão dele', list requires from/to, intervals are capped at 366 days, pagination has defaults/max, batch get reports errors per id, and date_field semantics are explained. It also discloses the returned data fields, which is valuable with no output schema present.

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 text is front-loaded and organized with action bullets, a date_field explanation, a practical example, return data, and a read-only note. It is longer than strictly necessary because the get action is described inside a list-flattened tool, but every remaining sentence carries useful information.

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 13-parameter tool with no output schema and zero schema descriptions, this is close to complete: required arguments, filters, pagination, date semantics, return fields, and read-only behavior are all covered. The unresolved ambiguities are the role of 'account' and whether the get action is actually available given the flattened action is list.

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 carries the full parameter burden and does so well: it explains from/to format and interval cap, enumerates filters, gives limit default/max and offset, defines entry_ids for batch get, and clarifies the date_field enum values. The only clear gap is the 'account' string parameter, which is never mentioned, so the parameter guidance is excellent but not complete.

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: 'Lê os lançamentos financeiros do iClips' and enumerates the covered entry types (entradas, saídas, A Pagar/A Receber). It also separates list vs. get behaviors, so an agent can distinguish this listing tool from iclips_financial_entries_get and the write-oriented siblings.

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?

It gives explicit when-to-use guidance, such as using type='A Pagar' with date_field=entry to see what matures in a month, and explains that payment dates only return already-paid items. However, it presents 'get' as an action inside a tool that is flattened to 'list', and it does not explicitly route the agent to the sibling iclips_financial_entries_get, which creates mild ambiguity.

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