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

Annotations already indicate readOnlyHint=false, idempotentHint=true, destructiveHint=false, and openWorldHint=false. The description adds no behavioral detail beyond these, such as side effects, permission requirements, or what 'frozen Brain Scanner policy' implies operationally. There is no contradiction with the annotations, but the description provides no incremental transparency.

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 short and free of clutter, but that is under-specification rather than conciseness. The single sentence contains no usable information about the tool's behavior, parameters, or context, so its brevity does not serve the agent.

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?

Given the nested oneOf input schema, required write payload, idempotency semantics, and a large sibling tool list, the description is severely incomplete. It does not explain the operation family, the constraints on payload fields, or any expected behavior, leaving an agent unable to safely invoke the tool.

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 must compensate for the lack of parameter documentation. It does not: the payload, required idempotencyKey, projectId, nested details object, and locked operation value are all unexplained. An agent cannot construct a valid request from this description.

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 says to 'Use the closed scope write capability family from the frozen Brain Scanner policy' but never states what the operation actually does, what resource it acts on, or what output it produces. It mostly restates the tool name ('scope_write') with policy branding, so an agent cannot infer that this is specifically about curating scope panels.

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?

No guidance is given about when to use this tool versus alternatives. The phrase 'closed scope' is not explained as a condition, and there is no comparison to sibling tools such as scope_read or curate_scope_panels. An agent has no basis for selecting this tool over others.

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