set_vacation_response

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

No annotations are provided, so the description must carry the full burden. It explains parameter defaults and the effect of leaving fields empty ('to leave unchanged'), but does not disclose side effects (e.g., overwriting existing settings), authentication requirements, or whether the tool creates vs. updates.

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 uses a readable 'Args' list but is somewhat verbose (e.g., repeating 'Empty to leave unchanged' for multiple fields). It could be streamlined without losing clarity, but remains functional.

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 tool with 6 parameters and no annotations, the description covers all parameter semantics effectively. It does not describe the return value, but the presence of an output schema mitigates this gap. Overall, it is nearly complete for its purpose.

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 0%, so the description compensates fully by detailing each parameter: is_enabled (required), date formats (ISO 8601), and the meaning of empty strings. This adds significant value beyond the schema's type and default fields.

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 begins with 'Set or update the vacation / out-of-office auto-reply,' clearly stating the verb (set/update) and resource (vacation auto-reply). This accurately differentiates it from sibling tools, such as get_vacation_response (read) and other email operations.

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 does not explicitly state when to use this tool versus alternatives, such as get_vacation_response for reading settings. The usage is implied by the purpose, but no exclusions or contextual hints are provided, leaving the agent to infer based on the name.

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