更新 Excel 单元格

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

The annotations already indicate destructiveHint=true and readOnlyHint=false. The description adds little beyond that—it states '更新' which is consistent with mutation, but does not disclose additional behavioral traits such as authorization needs, side effects on other cells, or file state changes. No contradiction with annotations.

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 well-structured with clear sections for parameters, return, example, and error handling. It is efficient, front-loading the main purpose. However, it could be slightly more concise by reducing repetition of parameter names already in schema.

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 has 3 parameters, no output schema, but with annotations present, the description covers all parameters with examples and error cases. It provides enough context for an agent to use the tool effectively, though it lacks usage guidelines and behavioral details.

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%, so baseline is 3. The description adds value by providing example usage (including JSON format for cells), returning structure, and error handling for invalid cells or sheet. This goes beyond the schema's simple type descriptions.

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 it updates cell values in a specified sheet, with specific verb '更新' and resource 'xlsx 文件中指定 sheet 的单元格值'. It is distinct from sibling tools like xlsx_read (read), xlsx_create (create), xlsx_add_sheet (add sheet), and xlsx_list_sheets (list sheets).

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. It does not mention when not to use it or under what conditions. No context about prerequisites or ideal scenarios.

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