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

The description adds no behavioral context beyond what annotations already indicate. It does not describe side effects (e.g., impact on child items), permission requirements, or return behavior. Annotations (readOnlyHint=false, destructiveHint=false) imply mutation but non-destructive, yet the description provides no additional detail to enrich understanding.

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 extremely concise, with no wasted words, and the key verb and resource are front-loaded. However, it is so brief that it borders on under-specification, though this is still efficient for a simple operation.

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 two required parameters, no output schema, and annotations are minimal, the description is incomplete. It fails to mention what the function returns (e.g., the renamed folder object or success status), any constraints on names, or potential errors. This is insufficient for an agent to fully anticipate behavior.

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 coverage is 0%, so the description must compensate. It mentions 'by `reference`', implying that 'reference' identifies the folder to rename, but does not explicitly clarify the role of 'name' (likely the new name). This partial explanation leaves one parameter's semantics ambiguous.

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: 'Rename a folder' with the subject being a folder and the method being by reference. It unambiguously identifies the resource and operation, distinguishing it from sibling tools like create, delete, get, and list.

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. The description does not mention prerequisites, exclusions, or when a rename might be preferred over other folder operations, leaving the agent without contextual decision-making help.

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