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

Annotations already declare destructiveHint=true, idempotentHint=true, and openWorldHint=true, so the safety profile is covered by structured data. The description adds nothing on top: it does not say what 'update' destroys or overwrites, whether unspecified fields are preserved (partial vs full replace), or what happens to child categories/items. For a destructive mutation this is a real gap.

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 front-loaded sentence with no padding or redundancy, and the identifying key is stated up front. It is efficient, though its brevity comes at the cost of the missing detail noted in other dimensions.

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?

An output schema exists, so return values need not be explained. However, for a destructive update whose payload is a free-form nested object, the definition omits the essential information an agent needs to invoke it correctly: which fields can be set and what the update semantics are.

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 schema documents both top-level params, but the 'input' object is an unconstrained free-form object with no declared properties, so the agent has no idea which fields are updatable or what types/values they accept. The description does not compensate at all, offering no field list or format guidance beyond 'by ID'.

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 (Update) and resource (knowledge base category) plus the lookup key (by ID), which cleanly separates it from glpi_create_knowbase_category, glpi_get_knowbase_category, and glpi_list_knowbase_categories. It does not explicitly name or contrast with those siblings, so it lands just short of a 5.

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?

The description gives no when-to-use context, no prerequisites (e.g., category must already exist), and no mention of alternatives such as create vs update. The only guidance is the implied 'you must have an ID', which is already obvious from the required parameter.

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