edit_xlsx_cell

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

With no annotations, the description carries the full burden. It states 'edit' but does not disclose critical behaviors like whether the file is overwritten in-place (the output_path parameter implies save-to-different-path option), error handling, or preservation of other cells. The description is too terse to provide adequate transparency.

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 extremely concise with one sentence and no fluff. It is front-loaded with the core purpose. However, it sacrifices behavioral information that could be added without significant length, so it's not a perfect 5.

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 lacks context about file handling (existence, overwrite), error states, or return values. Although an output schema exists (not shown), the description alone does not provide enough completeness for a mutation tool. Sibling tools suggest a broader document manipulation context, but this tool's unique aspects are underexplained.

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 100% and all parameters have clear descriptions (e.g., 'Cell reference (e.g. A1, B2)' and 'Save to different path (omit to overwrite)'). The one-line description adds no extra parameter meaning beyond the schema, 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 clearly states the verb 'edit', the resource 'cell value', and the file type 'XLSX'. It distinguishes this tool from siblings like insert_xlsx_row and apply_excel_formatting by specifying the exact action on a single cell. However, it does not clarify behavioral aspects like whether the file is overwritten by default.

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 usage guidance is provided. The description does not mention when to use this tool versus alternatives such as insert_xlsx_row (to add rows) or apply_excel_formatting (for formatting). The agent must infer usage solely from parameter names and sibling tool names.

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