Create Volume

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

Annotations indicate this is a write, non-destructive, non-idempotent operation with open-world effects. The description adds a placement constraint but does not elaborate on side effects like cost, naming conflicts, or return behavior. It offers some value beyond annotations but remains minimal.

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: two short sentences. The first sentence states the purpose, the second adds a crucial usage constraint. No wasted words; it earns its place.

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 7 parameters and no output schema, the description is partly complete. It covers the essential placement rule but omits important context: creating with 'server' attaches the volume, cost implications, and that the volume is initially unattached if only location is given. Schema coverage helps but the description could better round out the context.

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?

All 7 parameters are fully described in the schema (100% coverage), so the baseline is 3. The description does not add any parameter-specific details beyond what's already in the schema, such as format enum or labels structure. It mentions the 'location' vs 'server' choice but not the semantics of each parameter.

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 'Create a new volume', specifying the verb (create) and resource (volume). It adds a key placement constraint ('Either location or server must be provided'), which distinguishes this from sibling tools like attach, list, delete, or update operations.

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?

The description provides a constraint on parameter usage ('Either location or server must be provided'), but lacks explicit guidance on when to use this tool versus alternatives (e.g., attaching an existing volume, or using a different creation tool). Usage is implied but not differentiated.

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