add_data_to_sheet

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

There are no annotations, and the description only states that data is added starting at a cell. It does not disclose whether existing cells are overwritten, whether data is appended/inserted, whether the sheet and file must already exist, or what happens with invalid or non-rectangular data.

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 with no filler and starts with the primary action. However, the brevity contributes to missing behavioral detail, so it is good but not exceptional.

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?

For a mutation tool with no annotations and four parameters, the description is too thin to fully support correct invocation. It omits prerequisites, overwrite/append behavior, and how this tool differs from nearby siblings. The presence of an output schema does not make up for the missing operational context.

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 description coverage is 0%, so the description should compensate by explaining each parameter. It adds some meaning for start_cell ('given cell') and data ('data to add'), but it does not explain the nested-array structure of data (rows/columns), the role of file_path, or the sheet_name relationship.

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 names a specific action ('add data') and resource ('sheet'), and clarifies that writing starts at a given cell. It is broadly distinguishable from siblings like add_sheet, get_sheet_data, and set_cell_value, though it does not explicitly contrast with add_table_to_sheet or set_cell_formula.

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 versus alternatives such as set_cell_value or add_table_to_sheet. It also doesn't mention prerequisites like the sheet needing to exist or how this relates to the file_path/sheet_name parameters.

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