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

Annotations already declare write, non-destructive, idempotent behavior, but the description adds two non-obvious traits: missing parent folders are created as a side effect, and public links are unaffected by moving files. The plan restriction is also useful operational context. It omits what happens on duplicate paths, which would have pushed it higher.

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?

Three short sentences, front-loaded with the plan restriction and the core action. The public-link sentence is slightly tangential but still conveys folder semantics; nothing is padded.

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 tool with full schema coverage and annotations covering safety and idempotency, the description is nearly sufficient. The main residual gap is what the tool returns (e.g., created folder identifier) since there is no output schema, but that is a minor omission.

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 100% and the single path parameter is already documented with the same example in the schema. The description's only added meaning is that the path is hierarchical and parents are auto-created, which is mild value over a fully-documented 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 states a specific verb and resource ('Creates a folder') and immediately clarifies the input form ('from a path like Clients/Dupont'), which disambiguates it from sibling tools like create_upload_link or upload_file. It does not explicitly contrast itself with any sibling, so it falls short of a 5.

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?

'Pro plan only' gives a real prerequisite that an agent must check before calling. However, there is no guidance on when to use this versus related tools such as upload_file (which may also create folders) or move_file, and no statement about what happens if the folder already exists despite the idempotent annotation.

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