Redo

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

No annotations are provided, so the description carries the full behavioral burden. It discloses that this is a mutation limited to one position edit and names the acceptable file types, but it does not explain side effects, whether a prior undo is required, what happens when no redo is available, whether changes persist, or what the call returns.

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 definition is a single front-loaded sentence with no filler, and the core action is clear immediately. The long parenthetical listing file types is necessary context but slightly dense, keeping it from being maximally structured.

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 one-parameter mutation tool with no output schema and no annotations, the description covers purpose, target selection, and valid file types adequately. It still omits important redo semantics such as prerequisite state, failure behavior when nothing is redoable, and whether the operation affects unsaved in-memory state only.

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?

Schema description coverage is 0%, so the description must compensate for the undocumented file parameter. It does so well by explaining that the parameter is an optional path sourced from get_state's unsaved files and by listing the relevant extensions (.gca, carstatus.car, .ops, .efl), though "zone file shown" remains somewhat underspecified.

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 and resource: "Redoes one position edit." It also scopes the operation to either the currently shown zone file or a named data file, which helps distinguish it from broader file-revert tools. However, it does not explicitly contrast itself with the sibling undo tool or explain what a "position edit" entails.

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?

Usage is implied rather than stated: redo is the inverse of undo, and the file argument determines whether the action applies to the shown zone file or a get_state unsaved file. The description does not say when not to use it, what prerequisites must exist for a redo to succeed, or how it relates to undo and revert_file beyond the tool name.

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