Redo an undone change

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

Annotations already indicate this is a mutating, non-idempotent operation, so the description does not need to restate that. It adds meaningful context beyond the annotations by stating 'Snapshots current state first,' which clarifies a safety-related behavior and supports the destructiveHint=false annotation. It does not detail failure modes or undo-stack effects, but the snapshot disclosure is valuable.

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 two sentences with no wasted words. The first sentence states the core operation and target, and the second adds the key safety behavior. It does not repeat the title or schema information.

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 zero-parameter tool with annotations covering mutability, idempotency, and destructiveness, the description is largely complete: an agent knows what the tool does, when to use it, and that a snapshot is taken. A small gap is the lack of guidance on edge cases such as calling redo when there is no undo history or after the redo stack has been consumed, but this is not necessary for basic correct invocation.

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?

The tool has zero parameters and the input schema is empty, so there are no parameter semantics for the description to explain. With 0 parameters, the baseline is 4, and the description adequately focuses on the operation's meaning rather than parameter details.

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 states a specific verb ('Re-apply') and a precise resource ('the change that the most recent nuvio_undo reverted'). This clearly differentiates it from the sibling nuvio_undo and other state-management tools, and the word 'most recent' removes ambiguity about which change is targeted.

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 establishes the precondition implicitly: this tool is appropriate after a nuvio_undo operation, since it targets the change that undo reverted. It does not explicitly name alternatives or say when not to use it, but the undo/redo pairing and the reference to nuvio_undo make the usage context clear.

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