set_cells

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

No annotations are present, so the description carries the full burden. It discloses substantial behavior: the result reports cells_written, track records tracked changes by author, backup rotation behavior in file mode, atomic validated saves, and live editing semantics for documents open in Word. It does not cover failure/error behavior or permissions, but the disclosed context is strong.

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 dense but front-loaded: core purpose and edit format come first, then usage guidance, then behavioral caveats. Every sentence earns its place, though the backup details are packed into a somewhat compressed clause.

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 7 parameters, no annotations, and 0% schema coverage, the description covers the main workflow well—multi-cell edits, tracked changes, backups, and live mode—but omits details like index conventions and full semantics of several parameters. It is adequate for a competent agent but not fully complete for an unfamiliar caller.

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 must compensate. It does explain the central `edits` parameter and mentions `track`, `author`, and `backup`, but it leaves `file_path`, `table_index`, and the `live` parameter's possible values implicit, and it does not state whether `row` and `cell` are zero- or one-based—an important gap for actually constructing a valid call.

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?

Opens with a specific verb and resource: "Write many table cells in ONE call" and explicitly defines the core input shape `edits = [{row, cell, text}]`. It also differentiates this tool from its closest sibling, set_cells_block, by noting that the sibling writes a contiguous 2D block.

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?

Provides explicit guidance: "Use this for any multi-cell edit instead of per-cell calls" and names the alternative tool set_cells_block with the condition that selects it. It also adds a live-mode constraint about vertically merged tables, helping the agent decide when this path is appropriate.

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