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

Annotations already declare destructiveHint=true, idempotentHint=true and openWorldHint=false, so the safety profile is covered. The description adds the non-obvious restore capability tied to archived_at, but does not disclose what the destructive change entails or whether unspecified fields are preserved.

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 short sentence with no filler, and the primary update action is front-loaded before the restore case. It is efficient, though the brevity is partly under-specification rather than tight editing.

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 five-parameter mutation tool with destructive semantics and no output schema, the description does not say which fields can be changed, what happens to omitted fields, or what the caller gets back. An agent has to open the schema for nearly everything beyond the tool's identity.

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 coverage is 60%, with colours and tone_guidance carrying no descriptions at all. The description compensates only by alluding to restore (archived_at) and says nothing about name, colours, tone_guidance, or the brand_kit_id format, leaving several parameters explained by neither schema nor prose.

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 gives a clear verb+resource pair ("Change a brand kit") and adds a distinct secondary capability (restore an archived kit), which separates it from create_brand_kit, get_brand_kit and list_brand_kits. It is clear but does not name or contrast with any sibling explicitly.

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 versus alternatives such as create_brand_kit or set_brand_asset, and no prerequisites or exclusions. The phrase "or restore an archived kit" hints at one usage scenario but never states the condition under which it applies.

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