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

Annotations already declare readOnlyHint=false, destructiveHint=true, idempotentHint=true and openWorldHint=false, so the safety profile is covered. The description adds only "tenant-owned" scoping and "durable" — the latter largely restates the idempotent hint. It never explains why a creation tool carries destructiveHint=true, nor what a replay with the same key does.

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?

A single front-loaded sentence with no filler. Its brevity is close to under-specification, but structurally there is nothing to trim.

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?

With zero schema description coverage, an output schema present, and a destructiveHint-tagged mutation, the description should explain idempotency-key reuse, name/color expectations, and failure modes. It doesn't, leaving an agent to infer the contract from a pattern regex.

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% and the description mentions no parameters at all. Nothing explains what idempotencyKey should be reused for, whether color is optional or what format it takes, or whether name must be unique within the tenant — the schema constraints alone must carry all of it.

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?

States a specific verb and resource ("Creates ... media folder") plus scope ("tenant-owned"). It doesn't name any sibling (e.g., list_folders/rename_folder) to delimit itself, but the create-vs-modify split is obvious from the verb.

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 on when to reach for this tool versus alternatives, no prerequisites, no exclusions. The agent is left to infer that folder creation precedes move_transcript_to_folder or list_folders.

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