sys_mailalert

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does state that this is a write operation requiring confirmation, which is useful, but it does not disclose what happens on success/failure, whether the change is reversible, or what the confirmation flow entails. The 'requires confirmation' note is a positive signal but insufficient for a mutating tool.

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 short sentence that front-loads the action and includes a critical caveat ('requires confirmation'). It is concise and to the point, though it could add a bit more context without becoming verbose.

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?

For a write tool with no annotations, no output schema, and four parameters at 0% schema description coverage, the description is incomplete. An agent cannot determine how to supply the confirmation token or what the response will look like, which are essential for correctly invoking this 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 four parameters. It only explains the 'onoff' parameter implicitly via 'Enable/disable', and leaves 'user_code', 'confirm_token', and 'confirmation_id' completely unexplained. The enum on 'onoff' is visible in the schema, but the confirmation-related parameters are opaque.

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 ('Enable/disable') and a clear resource ('mail alert'), which distinguishes it from the many status/read tools in the sibling list. It does not explicitly name a sibling alternative, but the action is unambiguous.

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 description gives no guidance on when to use this tool versus alternatives, nor any prerequisites or context. The parenthetical '(write — requires confirmation)' hints at a confirmation flow but does not explain when confirmation is needed or how to obtain it.

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