create_workbook

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

Annotations indicate destructiveHint: true, but the description does not elaborate on what destructive behavior occurs, such as overwriting an existing file at the given path. The description adds no behavioral context beyond the annotation.

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 concise sentence with no fluff. However, it is minimal to the point of omitting critical contextual information, but that is a completeness issue rather than a conciseness issue.

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?

The description is insufficient for successful invocation. It does not specify the expected filepath format, overwrite behavior, or return value. Given the destructive annotation and the lack of output schema, more detail is required.

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%, and the description does not explain the filepath parameter, such as required format, file extension, or behavior when the path exists. The sole parameter's meaning is left entirely to the schema's 'Filepath' title.

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 'Create new Excel workbook.' uses a clear verb ('Create') and resource ('Excel workbook'), distinguishing it from sibling tools like create_worksheet that operate on worksheets. It is specific and unambiguous, though it could mention the filepath parameter.

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 about when to use this tool versus alternatives. With sibling tools like create_worksheet available, there is no explicit differentiation or context about when to create a new workbook instead of adding a worksheet.

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