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

Annotations already declare the safety profile (destructiveHint=false, idempotentHint=true), so the bar is lower. Still, the description adds nothing beyond the title — it doesn't say whether the changeset must first have been undone, what gets reapplied, or what happens if the changeset is not in an undone state.

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?

A single front-loaded sentence with no filler. It is appropriately sized, though its brevity is partly under-specification rather than disciplined editing.

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 mutating tool with three required parameters and heavy domain jargon, the description is far too thin. An output schema exists so return values needn't be covered, but the undefined 'acknowledged routine changeset' concept and the unstated precondition (an existing undone changeset) are real gaps.

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 only 33%: only idempotencyKey is documented, while sheetId and changesetId are bare UUIDs. The description provides no compensating explanation of what a sheet or changeset identifier refers to, so the description fails to fill the coverage gap.

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?

It names a clear verb ('Redo') and ties it to a specific object class ('undo changesets'), so the operation is identifiable. However, the qualifier 'acknowledged routine sheet undo changesets' is unexplained domain jargon that leaves the exact scope ambiguous, and it never names sheets_undo as the inverse sibling.

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?

There is no when-to-use guidance, no prerequisites, and no mention of the obvious alternative sheets_undo. The agent must infer the relationship between undo and redo entirely from the names.

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