Create a new addon domain in cPanel by providing the primary domain, associated subdomain, and document root path.
Create a new addon domain
| Name | Required | Description | Default |
|---|---|---|---|
| domain | Yes | New domain name to add | |
| subdomain | Yes | Associated subdomain name | |
| document_root | Yes | Document root directory path |
Changes observed during successful MCP inspections.
v2.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Since no annotations are provided, the description carries the full burden for behavioral disclosure. However, it simply restates the operation without noting side effects (e.g., DNS changes or subdomain creation), permission requirements, or result semantics.
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 sentence of six words, with no redundant or irrelevant content. It is maximally concise and front-loaded, though it sacrifices explanatory depth.
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 mutation tool with no annotations and no output schema, the description is skeletal. It does not explain what an addon domain entails, how it relates to subdomains or document roots, or what the response indicates.
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%, with each parameter having a clear description. The tool description adds no additional meaning beyond the schema, so the baseline score 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 verb 'create' plus the resource 'addon domain' clearly specifies the operation. It distinguishes well from sibling tools like list_addon_domains, delete_addon_domain, and create_subdomain.
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 alternatives such as create_subdomain, create_parked_domain, or create_redirect. There is no mention of scenarios, prerequisites, or exclusions.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.