redo_last_operation

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

With no annotations, the description carries full burden for behavioral disclosure. It transparently states that the tool re-applies changes to the diagram file, indicating a write/mutation operation. However, it does not disclose edge-case behavior such as what happens if there is no undone operation or if a conflict occurs. Given the mutation risk, more detail would improve transparency.

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, concise sentence that front-loads the action and resource. Every word contributes meaning, with no fluff or repetition.

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 simple tool with no parameters and no output schema, the description is largely sufficient. It conveys the operation and its effect. However, it could mention prerequisites (e.g., an undo must have occurred) or failure modes, which are minor gaps given the tool's simplicity.

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 0 parameters, so no parameter semantics are needed. The baseline of 4 applies because the description does not need to compensate for any parameter documentation gaps.

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 action ('Redo the last undone MCP operation') and the affected resource ('the diagram file'). It distinguishes itself from sibling tools like 'undo_last_operation' by explicitly mentioning 'redo' and 'last undone'.

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 implies usage after an undo operation by referring to 'the last undone MCP operation'. This gives clear context, though it does not explicitly state when not to use it or mention alternatives. The sibling list includes 'undo_last_operation', providing implicit contrast.

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