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

With no annotations, the description carries the burden of behavioral disclosure, and it adds two useful behaviors: uniqueness of folder names within a parent and the surprising fact that updated_at means row-touched, not content-changed. It could also state error handling or permissions, but the mutation and returned-row behavior are at least revealed through the create verb and the note.

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?

Every sentence earns its place: purpose, uniqueness rule, surprising updated_at note, parameter summary, and example. The format is front-loaded and easy to scan.

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 two-parameter create tool with no output schema, the description covers the tenant, uniqueness, the parameter semantics, and even the unusual timestamp semantics. The only real gap is that the returned row's full shape and duplicate-name failure behavior are not specified, both of which could matter when the caller inspects the result.

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%, but the description fully compensates: it explains that name is required, that parent_id is a UUID for the parent folder, and that omitting it means top-level. The uniqueness rule and the JSON example add meaning beyond the bare property names in the schema.

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 opens with a specific action and object: 'Create a creative folder for the authenticated tenant.' This directly states what the tool does and the tenant scoping, and because the sibling folder tools are delete, rename, and list operations, the create verb is enough to tell them apart.

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?

It gives clear invocation context: name is required, parent_id is optional, and omitting parent_id creates a top-level folder. It does not explicitly list alternative tools or when-not-to-use conditions, but the create/delete/rename/list sibling split makes the appropriate case obvious.

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