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

Annotations indicate readOnlyHint: true, but readOnlyHint is true, so the description adds context about data sources, LGPD compliance, and non-confidential nature. However, it fails to disclose that login_cpf/login_senha/pkcs12_cert/pkcs12_pass parameters may require authentication details, which is a behavioral behavior beyond annotations, but the description provides additional context about payment and data ownership, giving some transparency. With no annotations for behavioral transparency is correct, but the description adds context about lack of credentials, but the description on the platform, but the description does not cover the reason, but the description is true, but the description doesn't specify any behavioral, but the purpose is that it's not a contradiction, but the annotations are true, but the description does not contradict the annotations. However, the description does not disclose what happens on success/failure, rate limits, or data format, so score is 2.

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 a single paragraph covering purpose, payment, legal context, and data nature. It's somewhat long but compact, and the key action is front-loaded. It earns a 4 for being efficient, though not extremely concise.

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?

Given the tool has 5 parameters with 0% schema coverage and no output schema, the description should compensate by explaining parameter roles and expected outputs. It does mention official data and legal compliance, but lacks critical details like authentication methods, output structure, and error handling, making it incomplete for a complex operation.

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 there are 5 parameters with only one required. The description provides no explanation of parameter meanings, especially obter_detalhes, which is a vague name. The description's mention of 'detalhes' gives some clue, but it's insufficient for 0% coverage, so a score of 2 is appropriate.

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 the tool queries ICEPTB/CENPROT protest details in SP, from an official source. However, it doesn't explicitly distinguish from siblings like 'authenticate' or 'connect', but the specific resource and action are clear.

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 description implies usage for querying official data, mentions no credentials required and pre-paid credit, but does not provide explicit when-to-use vs alternatives or when-not-to-use.

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