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

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds genuine context beyond that by noting the response includes an editability indicator, but it does not say how that indicator behaves, whether non-launched campaigns error, or what the object's shape is.

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?

One compact sentence with no filler, and the key payload (description and message preferences) is front-loaded. The trailing editability clause is slightly awkwardly phrased but carries real information.

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, the description must describe the return value, and it does so at a reasonable summary level. Gaps remain for a nested-parameter read tool: the identity of the required id, behavior on unlaunched campaigns, and response structure are all unspecified.

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 never mentions the required `id` parameter, its UUID format, or what entity it identifies. The single-parameter surface makes the omission less damaging than it would be for a multi-param tool, but the description does nothing to compensate for the empty schema docs.

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 uses a concrete verb (returns) and names the specific payload: product/service description, message preferences, and an editability flag. That is meaningfully more specific than the title, and it is distinguishable from getCampaignMessaging and listCampaignProductDescriptions, though it never explicitly contrasts itself with those siblings.

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 only usage signal is the phrase 'a launched campaign', which implies a precondition but never states it as a rule (what happens for a draft or archived campaign is unstated). No alternative tool is named and no when-not-to-use guidance is given, despite several closely related siblings.

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