excel_merge_files

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 action ('merge') but doesn't explain how the merge works (e.g., by sheets, data ranges, or overwriting), what happens to file formats or errors, or any permissions/rate limits needed. This leaves significant gaps for a mutation tool.

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, efficient sentence with no wasted words, clearly front-loading the core action. It's appropriately sized for the tool's complexity.

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 no annotations, no output schema, and low schema coverage, the description is incomplete. It doesn't cover behavioral aspects like merge behavior, error handling, or output details, making it inadequate for a tool that performs file operations with multiple inputs.

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 schema description coverage is 0%, so the description must compensate, but it only implies parameters ('multiple Excel files', 'one workbook') without detailing 'inputFiles' as an array of file paths or 'outputPath' as a destination. This adds minimal semantic value beyond the schema's property names, meeting the baseline for partial compensation.

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 clearly states the verb ('merge') and resource ('multiple Excel files into one workbook'), making the purpose specific and understandable. However, it doesn't differentiate from sibling tools like 'excel_create_workbook' or 'excel_open_file', which prevents a perfect score.

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 on when to use this tool versus alternatives, such as other Excel-related tools in the sibling list (e.g., 'excel_create_workbook' for creating new workbooks or 'excel_open_file' for opening single files). It lacks any context about prerequisites or exclusions.

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