arvan_list_volumes

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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is clear. The description adds the region-scoping constraint but does not disclose pagination, ordering, or default behavior when region is null. It provides minimal value beyond annotations.

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 a single, front-loaded sentence of 7 words. It is efficient but could be more informative without verbosity. The phrase 'in a region' partially repeats the parameter name, but overall conciseness is good.

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 no output schema and minimal parameter documentation, the description fails to inform the agent about the structure of the returned list (e.g., volume IDs, names, or detailed info). It also omits pagination, limits, or error conditions. For a list tool, completeness is insufficient.

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?

The parameter 'region' has 0% schema description coverage, so the description must compensate. It implies filtering by region ('in a region') but does not clarify if the parameter is required, accepted values, or the effect of omitting it (default null). Incomplete parameter guidance.

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 it lists 'block-storage volumes' and scopes the operation 'in a region'. This verb+resource+scope pattern distinguishes it from sibling list tools like arvan_list_servers or arvan_list_images.

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 is provided on when to use this tool versus alternatives (e.g., arvan_get_volume for a single volume, or arvan_get_volume_limits for limits). The description does not mention any conditions or prerequisites.

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