mailu_create_alias

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

No annotations are provided, so the description carries full burden. It only states the action (create) without detailing side effects, error cases (e.g., duplicate alias), or permission requirements. This is insufficient for a mutation operation.

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, front-loaded sentence with the verb first. It is concise, but this brevity sacrifices useful detail for the agent.

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 that there is no output schema, no annotations, and 4 parameters (2 undocumented), the description is incomplete. It does not specify what the tool returns, whether it is idempotent, or what validation occurs. The agent lacks critical context for correct usage.

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 50% (email and destination have descriptions, comment and wildcard do not). The description adds no additional meaning beyond the schema: it repeats 'redirect to one or more destinations' which matches the destination field. It does not explain the comment or wildcard parameters, leaving ambiguity.

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 'Create' and the resource 'alias', with a clarifying parenthetical that it is a redirect to one or more destinations. This distinguishes it from sibling tools like update_alias, delete_alias, get_alias, and list_aliases.

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 other alias operations (e.g., update or delete), nor does it mention prerequisites such as the domain existing or authentication requirements.

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