system_packages_update_run

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

With no annotations, the description carries the behavioral disclosure burden. It does reveal this is a mutating operation and that confirm is required, which is important. However, it does not mention potential system impact, reversibility, restart effects, or failure modes.

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?

The description is compact, front-loaded, and free of filler. The Args block efficiently documents both parameters in a readable format.

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 two-parameter tool with an output schema, the core call semantics are present. However, it does not link to the similarly named update_test/updates siblings, describe consequences or rollback, or resolve the discrepancy between 'confirm: Required' and the schema's default false.

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%, so the description is the only source of parameter meaning. It explains that packages is optional and that an empty list means all pending upgrades. It also clarifies that confirm is required despite the schema default of false, though it does not explain what 'confirm' actually does.

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 action ('Apply OS package upgrades') with a clear resource. It does not explicitly distinguish itself from siblings like system_packages_update_test or system_packages_updates, but the verb 'Apply' makes the execution role reasonably clear.

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?

There is no guidance on when to use this tool versus the similar sibling tools, nor any exclusions or alternatives. The only usage hint is parameter-level ('Empty = all pending'), not tool-selection guidance.

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