excel_set_column_width

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

The description adds minimal value beyond the destructiveHint annotation. It does not mention that the tool modifies the file, the effect of the backup parameter, or any potential side effects.

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 that immediately conveys the tool's purpose, with no wasted words.

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 modifies an Excel file (destructive) and has 5 parameters including a backup option, the one-line description fails to provide essential context about file operation, persistence, or error conditions.

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?

With 80% schema description coverage, the tool description adds no additional parameter context. The schema already explains parameters adequately, so baseline 3 is appropriate.

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 'Adjust width of a column' clearly states the action and resource, and distinguishes from siblings like excel_set_row_height. However, it could be more specific (e.g., 'Set column width in Excel') for full 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?

No guidance is provided on when to use this tool vs. alternatives (e.g., excel_format_cell), nor prerequisites (e.g., file must exist) or when not to use it.

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