Redo last undone action

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

No annotations are provided, so the description carries the full burden. It adds useful behavioral context ('snapshot-based, best-effort'), signaling that it relies on snapshots and may not always succeed, but it omits details such as prerequisites (e.g., requiring a prior undo), what gets restored, or side effects.

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, front-loaded sentence with no wasted words. It efficiently conveys the core action and the key behavioral qualifier.

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 no output schema, the description is somewhat thin. It states the action and 'snapshot-based, best-effort' but does not address edge cases, failure modes, or how it interacts with checkpoint tools, leaving an agent with 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?

The tool has zero parameters, so there are no parameter semantics to describe. The baseline score of 4 is appropriate because the description does not need to add meaning beyond the empty schema.

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-applies') and resource ('most recently undone action'), making the tool's purpose immediately clear. It implicitly contrasts with the sibling 'undo' but does not explicitly name alternatives like 'restore_checkpoint', so it falls short of a full 5.

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 does not explicitly say when to use this tool versus alternatives such as undo or restore_checkpoint. However, the tool's name and the phrase 'most recently undone action' strongly imply it should be used after an undo operation, giving minimal viable guidance.

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