arvan_create_volume

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

The description only states it creates a volume. It does not disclose if the operation is synchronous, what happens if a volume with the same name exists, or any side effects. Annotations (readOnlyHint=false, destructiveHint=false) confirm it's a mutation but no additional behavioral context is provided.

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: one sentence followed by a compact parameter list. Every sentence adds value, with no redundant or irrelevant information. It is front-loaded and well-structured.

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 create tool, coverage is adequate but not thorough. Missing details about return value, success/error handling, and any prerequisites. No reference to related tools like arvan_get_volume_limits or arvan_list_volumes.

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 0%, so the description must compensate. It adds brief but useful info: name='Volume name', size='Size in GB', region with default, description 'Optional description.' This is adequate but lacks details like allowed values or constraints (e.g., size range).

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 explicitly states 'Create a block-storage volume,' using a specific verb and resource. It clearly distinguishes from sibling create tools for other resources (e.g., arvan_create_server) and volume management tools like arvan_snapshot_volume.

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 use this tool versus alternatives. It does not mention prerequisites, constraints (e.g., size limits), or when to prefer other volume operations like arvan_update_volume or arvan_attach_volume.

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