stalwart_create_domain

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It only states the action ('Add') without revealing side effects, requirements, or validation rules, such as whether the domain must be unique or whether DNS changes are needed. This is minimal disclosure.

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, front-loaded with the purpose, and includes an args block that directly addresses the only parameter. Every word earns its place, with no redundancy or filler.

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 simple tool with one parameter and an output schema, the description adequately states the core action. However, it omits any context about prerequisites, side effects, or relationships to other domain operations, leaving gaps that an agent would need to infer or discover elsewhere.

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 provides only a title for the 'name' parameter with no description (0% coverage). The tool description adds meaning by giving an example ('e.g. example.com') that clarifies the expected format. This compensates well for the schema gap, though it could be more detailed about constraints.

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 'Add a new mail domain' with a specific verb and resource. It distinguishes from sibling tools like delete_domain and list_domains, leaving no ambiguity about its purpose.

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 implies the tool is used for creating domains, but it provides no explicit guidance on when to use it versus alternatives, nor any prerequisites or exclusions. Usage is inferable from the purpose but not explicitly stated.

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