sophos_dns_update_custom_domain

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

No annotations are provided, so the description carries the full burden. It only states the action without disclosing behaviors like whether domains is a full replacement (though the schema indicates 'full replacement', the description does not). No mention of side effects, permissions, or rate limits.

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 one short, front-loaded sentence with no redundant information. However, it omits critical details about update behavior, making it slightly too concise for full clarity.

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 5 parameters, 2 required, no output schema, and many sibling tools, the description is incomplete. It does not explain what a custom domain list is, the update semantics (partial vs. full replacement), or prerequisites. The schema provides some detail, but the description should offer more context.

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 baseline is 3. The description lists the updatable fields but does not add additional meaning beyond what the schema provides. It marginally helps by summarizing which fields can be updated.

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 'Update' and the resource 'custom domain list', and lists the updatable fields. However, it does not explicitly define what a custom domain list is, which could cause ambiguity, but it is sufficient for distinguishing from sibling tools like create/delete/get.

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 (e.g., other DNS update tools like sophos_dns_update_location or sophos_dns_update_policy). No prerequisites or exclusions are mentioned.

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