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

Annotations already declare destructiveHint, idempotentHint and readOnlyHint. The description earns extra credit by disclosing that it 'does not activate' (config-only, not the final step) and that it is 'App-only', plus the preconditions for the auto path. It doesn't state what state is overwritten or what the response confirms, but adds real value beyond the annotations.

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?

Three terse sentences, front-loaded with the action and its gating condition. Every clause carries information and none repeats the schema or annotations.

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?

An output schema exists, so return values need not be described. For a destructive, idempotent mutation the description covers preconditions, mode semantics, and scope. The one real gap is the un-annotated parameters, especially revision and idempotencyKey.

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 carries the full burden for 5 parameters. It only illuminates the delivery enum (review vs auto); brandId, automationId, revision (likely optimistic concurrency), and idempotencyKey receive no explanation in either the schema or the 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?

States a specific verb (Set) and resource (automation delivery) with the two modes (review or auto) named inline. The phrase 'does not activate' meaningfully distinguishes it from the large activate_* sibling family, though it never names a specific sibling tool.

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?

Gives concrete preconditions: requires explicit user confirmation, and the 'auto' mode demands a reviewed sample plus publishing consent. 'App-only' scopes the access context. No named alternatives or explicit when-not guidance, so it falls short of a 5.

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