set_column_widths

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

No annotations are provided, placing full burden on the description. It discloses the length constraint but does not detail error handling, idempotency, or side effects like whether it overwrites existing widths or works only on visible tables.

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 that conveys the essential action and a vital constraint without extraneous words. It is optimally concise for its purpose.

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 the tool's simplicity (2 required params) and the presence of an output schema, the description adequately covers the main constraint but omits context such as how table_index relates to document tables or whether widths are applied proportionally. It is minimally complete.

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 coverage is 0% (no parameter descriptions), so the description adds value by specifying units (cm) and the array length constraint. However, it does not explain what table_index represents (e.g., 0- or 1-based) or the expected range of width values.

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 explicitly states the action ('Set'), the resource ('column widths'), and the unit ('in cm'), which clearly distinguishes it from sibling tools like set_cell_width or set_table_style. The additional constraint about array length adds clarity.

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 one key constraint (len(widths_cm) must match column count) but lacks guidance on when to use this tool versus alternatives (e.g., set_cell_width). No prerequisites or exclusions are mentioned.

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