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

Annotations already cover the safety profile (readOnlyHint, destructiveHint=false, openWorldHint=false), and the description adds genuinely useful behavior: the merge across three event types, period scoping, and the notable caveat that peças have no date and are returned separately as pecasSemData. It stops short of describing pagination or the full return shape, so it is strong but not exhaustive.

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 front-loaded with the core action, then usage, then exclusions, then a return-format caveat, and every sentence carries distinct information. The single dense block is slightly long but nothing is wasted, so it sits just below maximal efficiency.

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?

With no output schema and no annotations gap on safety, the description supplies the essential context: what is merged, ordering, period filtering, and the pecasSemData edge case. It is complete enough to call correctly, though a hint about volume/pagination limits would close the last gap.

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 100%, so the parameters (processoId, desde, ate, limite) are already fully documented, giving a baseline of 3. The description reinforces the desde/ate period filter but adds no syntax or semantics beyond what the schema provides and never mentions the limite cap.

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 states a specific verb and resource ('Monta a linha do tempo de UM processo') and enumerates exactly what is merged (andamentos, audiências, prazos) in chronological order. It also explicitly separates itself from buscar_autos and ler_paginas, so an agent can distinguish it from siblings without opening a schema.

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 gives concrete trigger phrases ('linha do tempo do caso', 'histórico do processo', 'o que aconteceu entre X e Y') and an explicit negative case ('NÃO use para ler o conteúdo das peças'), naming the two alternatives to use instead. When-to-use, when-not-to-use, and alternatives are all present.

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