disable_sender_domain_inbound

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

No annotations are provided, so the description must fully disclose behavior. It states that inbound email is disabled and replies will not be delivered, but omits potential side effects like impact on queued emails, reversibility, or required permissions. The transparency is incomplete.

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 extremely concise with two sentences, front-loading the action and then explaining the effect. Every word adds value with no wasted text.

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 tool's simplicity (2 parameters, no output schema), the description covers the basic purpose and effect. However, it lacks context about prerequisites (e.g., domain must be registered), idempotency, or what happens if already disabled. It is adequate but not fully complete.

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?

The input schema has 100% coverage, describing both parameters (domain and project_id) adequately. The description does not add any additional meaning beyond what the schema already provides, so it meets the baseline without extra value.

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 clearly states the verb 'Disable' and the resource 'inbound email on a custom sender domain', along with the effect of no longer delivering replies. However, it does not explicitly differentiate from sibling tools like 'enable_sender_domain_inbound' or 'remove_sender_domain', though the effect provides some distinction.

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 provides no explicit guidance on when to use this tool versus alternatives like enable_sender_domain_inbound or register_sender_domain. It lacks context about prerequisites, such as the domain needing to be registered or currently enabled, and does not mention any exclusions.

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