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

With no annotations, the description carries the behavioral burden. It discloses the list contents and implies a read-only listing operation, but it does not explicitly state that the tool has no side effects, nor does it clarify what DNS state values are returned. This is adequate for a simple list tool but leaves some behavior implicit.

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 a single, tightly worded sentence with no filler. The colon structure efficiently enumerates the return contents, though starting with an explicit verb like 'List' would make it slightly more direct.

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 straightforward list operation with one optional parameter, the description covers the returned content well. However, without annotations or an output schema, it leaves the DNS-state format and the exact scoping behavior to the schema, and it gives no context about when to use this instead of the other domain tools.

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 schema covers 100% of the one parameter, workspace, with a clear description. The tool description adds no additional parameter-level meaning beyond 'this workspace,' so the baseline of 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 identifies the resource (the workspace's domains) and enumerates exactly what is included: the free boathousecloud.com address, the primary domain, and custom domains with DNS state. This distinguishes it from sibling domain tools like domain_attach, domain_dns, and domain_point. The listing intent is implicit rather than stated with an explicit verb, but the noun-phrase description is specific and unambiguous.

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?

No guidance is provided on when to use this tool versus the many domain-related siblings. It does not state that this is the read-only inspection counterpart to domain_attach, domain_detach, or domain_primary, nor does it mention when a user should prefer those tools instead.

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