Format a Google Sheet

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

The description adds meaningful behavior beyond the annotations: it states that no cell values are changed, that the tool is never gated, and that defaults apply all three formatting actions to the first tab. It also explains how to skip individual steps with freezeRows:0, boldHeader:false, and autoResize:false. This is consistent with the idempotentHint and destructiveHint 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 information-dense and front-loads the core purpose with three clear actions. It then adds workflow context and parameter-level skip behavior in compact, scannable prose. Every sentence contributes operational value, and there is no redundant restating of the title or 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?

The description provides the canonical workflow, default behavior, skip flags, and a safety profile, which is strong for a low-complexity formatting tool. It is incomplete only in not addressing how to target the spreadsheet via sheetUrl or spreadsheetId, and there is no return-value note, though that is less critical for an action-style tool.

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 only 33%, so the description must compensate. It does add semantics for autoResize and boldHeader by tying them to visible effects, and it clarifies freezeRows:0 and the default-first-tab behavior. However, sheetUrl and spreadsheetId are never explained in either the schema or the description, leaving a notable gap for how the target spreadsheet is identified.

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 uses a specific verb ('Make ... readable') and enumerates three concrete formatting actions: bolding the header row, freezing it, and auto-sizing columns. It also names the resource (an exported Google Sheet) and positions the tool right after create_sheet, which differentiates it from other sheet-related siblings.

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 explicitly says 'Worth calling right after create_sheet,' giving a clear trigger and workflow context. It also notes that the tool 'changes no cell VALUE' and is 'never gated', which tells an agent when it is safe and appropriate to call. It does not enumerate alternative tools for value edits, but the provided guidance is sufficient for the common workflow.

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