zabbix_explicar_metricas

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

No annotations are provided, so the description carries the full burden and mostly fails it: it never states that the operation is read-only, whether it internally queries history/trend data, over what time window, or what any cost or rate limits apply. Only the implicit inference from 'dados recuperados' hints at a non-mutating analysis.

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?

It is a single short sentence with no filler prose, so it is compact, but the leading '93.' is meaningless clutter and the sentence is under-specified rather than genuinely concise. Front-loading the purpose is fine; the content is just thin.

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?

Because an output schema exists, the description need not explain return values, and there is only one required parameter, which keeps the bar low. Still, for an analysis tool with zero annotation coverage it omits the time range, the data source (history vs trends), and the distinction from sibling analytics tools, leaving meaningful gaps.

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 description offers only the vague phrase 'do item', which hints that itemid identifies a Zabbix item but never states the expected ID format, whether the item must be numeric-type, or what happens for text items. With coverage below 50% the description is expected to compensate and does not.

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 verb 'Explicar' plus the resource 'métricas e tendências' does state an analytical intent, but the qualifier 'com base em dados recuperados do item' is ambiguous about whether the tool fetches data itself or interprets data supplied elsewhere. The orphaned '93.' prefix is noise that adds no meaning, and nothing distinguishes it from the many sibling analysis tools (consultar_tendencias, comparar_periodos, detectar_anomalias).

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?

No when-to-use guidance is given and no alternatives are named, despite the sibling list containing several overlapping analytics tools such as zabbix_consultar_historico, zabbix_consultar_tendencias, zabbix_comparar_periodos and zabbix_detectar_anomalias. An agent has no way to know when this explanation tool is preferable to simply reading trends or history directly.

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