list_volumes

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

With no annotations provided, the description carries the full burden. The verb 'List' signals a read-only operation and 'by you' communicates user scoping, which is useful. However, it does not disclose potential pagination, ordering, status filtering, or fields returned, though these gaps are minor for a simple listing tool.

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 with no filler. Every word adds meaning: 'List' gives the action, 'all volumes' gives the object, and 'currently rented by you' gives the scope.

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 no-parameter list operation, the description is largely complete: it states the action, the resource, and the user scoping. It does not describe the return payload, but since there is no output schema and the tool is simple, an agent has enough to know when and how to call it.

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?

There are zero parameters and the schema describes an empty object, so the description has no parameter meaning to add. Per the baseline for 0-parameter tools, a 4 is appropriate; the schema already fully covers this dimension.

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 uses a specific verb ('List') and resource ('volumes'), and adds the scope qualifier 'currently rented by you.' This clearly distinguishes it from siblings like list_gpus (different resource) and create_volume (different operation) without needing to open any schemas.

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 intended use is implied: an agent should call this when it needs to see the user's currently rented volumes. However, there is no explicit guidance about when not to use it or when a sibling like list_gpus or search_offers would be more appropriate.

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