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

Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true, which the description reinforces by mentioning 'dados abertos oficiais' and listing output fields, but it doesn't detail pagination limits or response specifics. The description adds scope ('recentes', 'sem palavra-chave') beyond annotations, so a 4 is appropriate given the strong annotation coverage.

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 sentence that front-loads the core action and fields, adds usage guidance, and names an alternative. No wasted words.

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 list tool with 2 simple pagination parameters and no output schema, the description provides the essential information: what it lists, the fields returned, and the alternative for search. Given the annotations cover safety, it's complete for its purpose, though it could note that no keyword filtering is allowed (already implied by 'sem palavra-chave').

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?

The input schema has 'inicio' and 'quantidade' with no descriptions, and schema description coverage is 0%, so the description carries no parameter details. However, the description implies pagination ('paginado'), which loosely maps to these parameters, but it doesn't explain how inicio/quantidade work or their defaults. Since these are common pagination parameters and the tool's purpose is clear, a baseline 3 is fair, though the description could compensate more.

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?

Description clearly states the tool lists recent TCU judgments (acórdãos) with specific fields (sumário, relator, colegiado, data da sessão, links), and distinguishes from tcu_buscar by noting it's without keyword search and paginated. The verb 'Lista' is specific and the resource is 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 explicitly states when to use this tool (for listing recent acórdãos without keyword) and points to the alternative tcu_buscar for searching by topic, providing clear usage context and a named alternative.

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