ketan_rollback

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

With no annotations provided, the description carries the full burden. It explicitly discloses the destructive nature of the operation: 'Reverts ALL filesystem changes (file writes, deletions, renames)' and also notes the performance trait 'in sub-second time.' It does not mention reversibility of the rollback itself or any error conditions, but the core behavioral trait—destructive rollback—is clearly stated.

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 compact and efficient: two sentences covering purpose and scope, plus an Args line for the parameter. It is front-loaded with the primary action and every sentence adds value. No fluff or redundancy.

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 that an output schema exists, the description need not explain return values. For a single-parameter destructive tool, it covers the action, the parameter source, and the scope of changes. It could add a warning about irreversibility or the need for a snapshot, but the current description is largely sufficient.

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 schema only specifies checkpoint_id as a string type. The description adds meaning by stating that it is 'The checkpoint ID to roll back to' and identifies its source (ketan_get_checkpoints or ketan_snapshot). Since schema coverage is 0%, this compensation is essential and well-executed, though it could provide more detail on format or validation.

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 clearly states the tool's function: 'Time-travel rollback the workspace to a previous checkpoint.' It specifies a concrete action (rollback), a resource (workspace), and the scope ('ALL filesystem changes: file writes, deletions, renames'). This distinguishes it from sibling tools like get_checkpoints or snapshot, as it is the only rollback tool.

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 provides clear context for when to use the tool (to revert filesystem changes after a checkpoint) and even explains where to obtain the required checkpoint_id (from ketan_get_checkpoints or ketan_snapshot). However, it does not explicitly mention alternatives or when not to use it, which keeps it from a 5.

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