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

The annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is fully covered and the description owes nothing there. It adds genuinely new context by stating the catalog is public (no auth) and that entries carry context window and indicated use, but says nothing about ordering, size, pagination, or whether results change between calls.

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?

A single short sentence with zero filler, and the defining attribute (curated `rota/*` catalog) is front-loaded before the field description and the access note. Nothing could be removed without losing 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 zero-parameter, read-only list tool with no output schema and full annotation coverage, the description supplies enough to call it correctly and to know roughly what comes back. The remaining gap is moderate: without an output schema or any mention of the result shape, item count, or ordering, the agent still cannot predict the response structure.

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 takes zero parameters, so there is nothing for the description to disambiguate, and the baseline for a parameterless tool applies. No misleading or absent parameter information is present.

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 exact resource (the curated catalog of `rota/*` models) and states what each entry exposes, context window and indicated usage. It is clear what the tool returns, though it never defines the verb form or contrasts itself with the other `listar_*` catalogs, so an agent must infer the distinction from the sibling names alone.

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 explicit when-to-use or when-not-to-use guidance and no named alternative. The single word 'Público' hints that no authentication is required, but nothing tells the agent whether to call this instead of `listar_cyber`, `listar_guias`, or `pricing`, which is exactly the decision a catalog-listing tool has to support.

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