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

The description explicitly states that this is a write operation and that it changes data via '[write, altera dados]', which provides some transparency beyond the annotations. However, it does not disclose return behavior, required authorization, or edge cases like duplicate list creation.

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, front-loads the core purpose and HTTP method, and has minimal wasted words. It is slightly redundant because 'write' and 'altera uma dadds' convey similar meaning, but it remains efficient.

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 unexplained parameters, this description is not sufficient for a safe and correct create operation. It would need to explain what the created list should contain, how 'body' maps to the API request, and what response the agent should expect.

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%, and the description does not explain what the 'body' string should contain or how the 'account' parameter is used. Without this information, the agent cannot correctly construct the request payload.

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 a specific verb and resource: 'Criar lista' with 'POST /api/v1/lists'. This distinguishes it from sibling list operations like datacrazy_lists_delete, datacrazy_lists_get, datacrazy_lists_update, and datacrazy_lists_list.

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 guidance about when to use this tool versus alternatives, nor any context about required prerequisites or typical workflows. The intended usage is only implied by the tool's name and the HTTP endpoint.

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