sophos_dns_create_custom_domain

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

No annotations are provided, so the description must cover behavioral traits. It mentions that the list is not typed (allowed/blocked) here, which is a useful constraint. However, it does not disclose side effects, permissions, or error conditions like duplicate names.

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 two sentences, front-loaded with the purpose, and contains no unnecessary words. It is highly efficient.

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 has no output schema, so the description should hint at the return value (likely the created list ID). It also lacks details on validation or prerequisites. However, it does connect to policy tools, providing some workflow context. Moderate completeness.

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 coverage is 100%, so the description need not add much. It does not provide additional meaning beyond the schema's parameter descriptions (name, domains, tenant_id, description). Baseline 3 is appropriate.

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 tool creates a custom domain list for DNS Protection, specifies it's for lists not typed (allowed/blocked), and distinguishes from sibling tools like sophos_dns_create_policy and sophos_dns_update_policy.

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 explains that the list is assigned on a policy via other tools, providing context for when this tool should be used. It implicitly guides the agent to use this for creation and the policy tools for assignment, but doesn't fully outline when not to use it.

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