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

Annotations already declare destructiveHint=true and openWorldHint=true, so the safety profile is known. The description adds only that the domain belongs to a published site; it does not explain what 'remove' destroys, how idempotency_key affects retries, or what side effects occur. No annotation contradiction, but little added behavioral context.

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 single sentence is front-loaded and contains no filler, so it is structurally efficient. However, it is too terse for a destructive, multi-operation tool with zero parameter documentation.

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 four parameters, 0% schema description coverage, no output schema, and destructive/open-world annotations, the description is far too incomplete for correct invocation. It omits operation behavior, required inputs beyond the resource, idempotency semantics, and removal consequences. An agent would need to rely almost entirely on the schema's enum and required fields.

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% across four parameters, and the description does not explain the operation enum, workspace, idempotency_key, or domain validation pattern. The only parameter meaning implied is 'custom domain', leaving the required idempotency_key and operation semantics undocumented. The description does not compensate for the complete lack of schema descriptions.

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 identifies the resource (custom domain for a published site) but uses the vague verb 'Manage' rather than specifying the set/refresh/remove operations exposed by the schema. It does not distinguish the tool from unrelated siblings, though no direct sibling is supplied. Purpose is inferable but not stated with a specific verb.

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, when not to use it, or how to choose among the operation enum values (set, refresh, remove). No prerequisites or alternatives are named. The agent must infer usage entirely from the tool name and schema.

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