twilize

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

No annotations are provided, so the description carries full burden. It mentions 'undo' and 'restoring previous workbook state,' which implies mutation reversal, but does not disclose behavioral traits like permissions needed, whether it's reversible itself, rate limits, or error conditions. This leaves significant gaps for a mutation-related tool.

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, efficient sentence that is front-loaded with the core action ('Undo the last mutating operation') and adds necessary detail ('restoring the previous workbook state'). There is zero waste 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 the tool has 0 parameters, 100% schema coverage, and an output schema exists, the description is reasonably complete. It explains the purpose and effect, but as a mutation-related tool with no annotations, it could benefit from more behavioral context (e.g., limitations or side effects) to be fully comprehensive.

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, and schema description coverage is 100%, so no parameter documentation is needed. The description does not add param info beyond the schema, but with no params, a baseline of 4 is appropriate as it adequately addresses the lack of inputs.

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 verb ('undo') and the resource ('last mutating operation'), specifying it restores the previous workbook state. It distinguishes from siblings by focusing on reversal rather than creation, configuration, or analysis operations.

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 a mutating operation but does not explicitly state when to use it versus alternatives (e.g., save_workbook or reset_rules). It provides some context but lacks explicit exclusions or named alternatives.

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