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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, so the safety profile is covered. The description adds the useful behavioral fact that a POST here answers 410 with the path, which is non-obvious endpoint behavior the annotations do not convey. It does not, however, describe what the 'check' produces.

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?

Two sentences with little waste, but the first is dense with undefined Portuguese domain terms and does not front-load the core action. The second sentence is relevant but describes a sibling route rather than this tool's own use.

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-param read-only tool with no output schema, the description carries the full burden of explaining the return, and it does not – it never says what the ownership check yields or how an agent should act on it. The complexity is low, but a key piece is missing.

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 and the schema is empty, so there is nothing to document; the baseline of 4 applies. The description correctly introduces no parameter concepts that would need explaining.

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 a resource – Salvas, Alertas and Vigias tied to the session account – but the verb 'Checks' is vague and the domain terms are left undefined. An agent can infer it verifies ownership of tracking lists, but cannot tell what the tool actually returns or does beyond that.

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?

It effectively tells the agent when NOT to use it by pointing out that guest `edm_…` lists are moved via `POST /api/auth/claim` and that a POST to this route returns 410. That gives a negative routing hint toward the `claim_guest_tracking` sibling, but there is no explicit positive statement of when this tool should be called.

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