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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It reveals content categories but does not state whether the operation is read-only, what the output format is (e.g., JSON, text, markdown), or any other behavioral traits. This is a notable gap for an agent deciding whether invoking it has side effects or requires auth.

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 concise phrase with the key term 'Índice da API' front-loaded, followed by the main covered topics. Every word adds value and there is no redundancy or filler.

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 zero-parameter, no-output-schema tool, the description gives the essential content areas (routes, billing, price) but fails to specify what the actual response looks like or that it is a safe, read-only lookup. Given the simplicity of the tool, this is acceptable but leaves some ambiguity about the return format.

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 tool has zero parameters, so the baseline is 4. The description correctly makes no parameter claims, and the schema is empty. No additional parameter explanation is needed.

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 names the resource (API do EditalMD) and specifies the content (rotas, regime de cobrança e preço), clearly identifying it as an index of API information. It lacks an explicit verb like 'lists' or 'returns', but the noun 'Índice' conveys the action. It is distinct from all sibling tools, which are specific operational tools.

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: consult this tool when needing API routes, billing regime, or pricing. It provides clear context but no explicit when-to-use or when-not-to-use instructions, and no alternatives are mentioned. Since no sibling tool serves the same index-looking purpose, the implied guidance is adequate.

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