add_status_page_subscriber

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

No annotations are provided, so the description bears full burden. It fails to disclose key behaviors such as whether the subscriber is immediately active, any confirmation process, idempotency, or side effects. The brief description is insufficient.

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 very short with two clear sentences, but it could be better structured (e.g., separate purpose from requirements). Still, it avoids verbosity.

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 simple add operation, the description minimally covers purpose and the required email field, but lacks details on permissions (admin needed), page_id context, or return value (output schema exists). It is adequate but not comprehensive.

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?

Despite the schema having a description for 'email', the context shows 0% schema description coverage. The description only repeats that email is required and adds no additional meaning for either parameter (page_id unexplained).

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 explicitly states 'Add a subscriber to a status page' with a clear verb and resource, and includes '(admin)' to indicate privilege level, effectively distinguishing from sibling tools like remove or list.

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 indicates admin scope via '(admin)', implying when to use, but does not explicitly mention alternatives like remove_status_page_subscriber or conditions for use.

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