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

Annotations already cover the safety profile (readOnlyHint=true, idempotentHint=true, destructiveHint=false) and the description does not contradict them. The description adds meaningful behavioral context beyond annotations: it is a precursor/sequencing tool that must be invoked before responding, and it documents what each loaded skill covers. No contradiction.

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?

Purpose and usage timing are front-loaded in the first sentence, then the 15-topic catalog follows. The catalog is long but every entry maps 1:1 to an enum value and earns its place by adding routing detail; however, some bullets restate their key (e.g., 'credit_card_spending: Análise de gastos no cartão de crédito') and could be trimmed slightly.

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 single-parameter router with no output schema and zero nested objects, the routing logic is exhaustively specified — the agent knows exactly when to call and which skill to request. The main gap is not describing what the tool returns or how the loaded skill modifies subsequent behavior, beyond the implied 'use it before answering' instruction.

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 the sole parameter skill_name is a bare 15-value enum, so the description carries the documentation burden. It compensates strongly by explaining the semantic of every enum value (e.g., 'invoice_payments: Pagamento de fatura de cartão MANUAL: register_invoice_payment — nunca create_transaction para pagar fatura' teaches the agent a rule it must follow). The mapping is implicit (bullet names match enum values exactly) rather than explicitly stating that skill_name takes these values, which prevents a 5.

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?

States a specific verb ('Carrega' — loads) and resource (a detailed usage guide/skill about an Organizze topic). It is unambiguous and clearly distinct from the 65 sibling tools, which are all operational (create/list/delete/get); this is the only meta-tool that loads guidance rather than performing a domain action.

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?

Explicitly instructs 'Chame ANTES de responder quando a conversa tocar um destes temas' (call BEFORE answering when the conversation touches one of these topics), giving precise timing and triggering conditions. The 15-item topic catalog provides detailed routing criteria for each skill, telling the agent exactly which skill to load in which situation.

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