excel_create

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool creates a new .xlsx file but does not mention whether it requires special permissions, where the file is saved, whether an existing file can be overwritten, or what the return value is. For a side-effecting tool, this leaves important behavioral traits undisclosed.

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 no filler. Every word earns its place: it names the action, the file type, and the core content options. This is ideal conciseness.

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 zero-parameter creation tool, the description provides the essential purpose and input concept, but it omits key operational details such as the file save location, whether a file path is returned, and how the 'headers and optional data rows' are supplied given the empty schema. The lack of an output schema makes these omissions more significant, resulting in a minimum-viable but not fully complete description.

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 input schema has zero parameters, so per the rubric the baseline is 4. The description adds some useful context by mentioning 'headers and optional data rows', giving the agent an idea of what the tool can accommodate, even though no parameters are defined in the schema. It does not need to explain parameter syntax since there are no parameters.

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 uses a specific verb ('creates') and a specific resource ('Excel spreadsheet (.xlsx file)'), and it differentiates from sibling tools like excel_read and excel_write_cell by clearly indicating this is for making a new file. It also specifies the content ('headers and optional data rows'), which is precise and unambiguous.

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 should be used when creating a new Excel file, which is enough to distinguish from read/write operations, but it does not explicitly state when to prefer this tool over alternatives or mention any exclusions. The usage context is only implied by the verb 'creates'.

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