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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It does not clarify whether this is a read-only check, whether it triggers authentication, what happens when the session is invalid, or what the verification actually inspects. '(config + GetView)' hints at implementation details without explaining observable behavior.

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 a single, front-loaded sentence with no wasted words. Its brevity is appropriate structurally, though the cryptic parenthetical reduces clarity rather than adding useful detail.

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 annotations and no output schema, the description should explain what 'verify session' returns or how it behaves. Instead, it leaves the agent guessing about the result, failure modes, and relationship to 'start_browser_auth', which is insufficient for a tool an agent may need to call before other campaign operations.

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 100%, and there is only one optional parameter ('notification_message'), so the schema already documents it adequately. The description adds no parameter-specific meaning, which is acceptable given the high coverage baseline.

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 states a specific verb ('Verify') and resource ('Apple Search Ads session'), which is better than a tautology. However, the parenthetical '(config + GetView)' is jargon and does not clearly distinguish this tool from the sibling 'start_browser_auth', so an agent cannot confidently tell the two apart from the description alone.

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 explicit guidance on when to use this tool versus 'start_browser_auth' or other session-related operations. The implied use case is checking session validity, but the description does not state prerequisites, exclusions, or what to do if verification fails.

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