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

The description adds the key behavioral detail that the folder's contents are also deleted, which goes beyond the annotations' mere destructiveHint flag. It clarifies the cascading nature of the deletion, though it doesn't mention irreversibility (already implied by 'delete').

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 imperative sentence followed by a minimal args list. It is front-loaded and has no filler, earning a high score.

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 delete operation, the description covers the tool's purpose and parameter. The output schema handles return values, and annotations convey the destructive nature. However, it could mention error conditions or necessary permissions, but these are likely assumed for a straightforward delete.

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 schema only defines folder_id as a required string with no description. The description's Args block states 'The folder UUID', adding format information (UUID) that the schema lacks, which is helpful but minimal; it doesn't explain how to obtain the ID or any validation rules.

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 'Delete a library folder and everything inside it' with a clear verb and resource, and the 'everything inside it' distinguishes it from delete_library_item and other folder operations. This provides specific scope.

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 explicit guidance on when to use this tool over alternatives like move_library_folder or rename_library_folder is provided. The context only implies that deletion is intended for discarding a folder and its contents, but no exclusions or alternatives are mentioned.

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