rename

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

No annotations are provided, so the description must convey behavioral traits. It only states the operation and return format, but does not disclose side effects (e.g., mutation), error conditions (e.g., old_key missing, new_key already exists), or whether it is atomic.

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 concise at three sentences, includes a clear purpose statement in the first sentence, and structures parameters and returns efficiently. No extraneous content.

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's simplicity and the presence of an output schema describing the return structure, the description covers parameters and return format. However, it omits behavioral details like error conditions, making it only minimally complete.

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 description adds slight meaning beyond the schema by labeling old_key as 'current name' and new_key as 'new name.' However, schema coverage is 0% (schema only has titles), and the description does not provide constraints, examples, or further detail, so only moderate value.

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: "Renames a Redis key from old_key to new_key." It uses a specific verb (rename) and identifies the resource (Redis key), distinguishing it from sibling tools like delete, expire, or get.

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?

No guidance is provided on when to use this tool versus alternatives. It does not mention prerequisites (e.g., key must exist) or behaviors like overwriting an existing new_key. The description lacks context for appropriate usage.

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