get_email_security_domain

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

With no annotations, the description carries the behavioral transparency burden. 'Get' implies a read-only retrieval with no side effects, which is helpful, but the description does not disclose any other behavioral traits such as required permissions, account context, or what 'details' includes. For a simple getter this is minimally adequate, but not rich.

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 and front-loaded, with no wasted words. However, it is essentially a restatement of the tool name and provides no structural detail or context, so it is concise for the wrong reason: under-specification rather than efficient informative writing.

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?

The tool is low-complexity with only two parameters and no output schema, but the description is still incomplete. It does not clarify what email security domain details are returned, how this differs from trusted domains, or what account/domain are expected. An agent would need to inspect other tools or API docs to call this confidently.

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%, so the schema already documents both account_id and domain_id. The description adds no additional meaning about how these parameters relate to the domain being fetched, but the parameter names are reasonably self-explanatory, so the baseline 3 applies.

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 clear verb ('Get') and a specific resource ('email security domain details'), so an agent can tell this is a retrieval operation for a single domain. However, it does not distinguish this from sibling tools like list_email_security_domains or list_email_security_trusted_domains, and 'domain' alone is ambiguous without more context.

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 guidance on when to use this tool versus alternatives. An agent is not told to prefer this over list_email_security_domains when a single domain is needed, nor is any exclusion or alternative mentioned.

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