vmware-vks

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

With no annotations provided, the description carries the full burden of behavioral disclosure but fails to indicate whether this is a safe read-only operation, the output format/structure, pagination behavior, or error handling (e.g., behavior when namespace doesn't exist). It only states the functional intent without operational characteristics.

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 appropriately brief with a clear functional statement followed by an Args section. While the docstring-style formatting is slightly informal, it efficiently conveys parameter meanings without verbose prose. No redundant or wasteful sentences.

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 2-parameter query tool with no output schema, the description adequately identifies the query scope (PVCs/storage) but misses opportunity to describe the return structure, units (bytes vs percentages), or error scenarios. It meets minimum requirements but leaves significant gaps in operational 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?

Schema description coverage is 0%, leaving the parameters undocumented in structured data. The description compensates by providing basic semantic context via the Args section: 'vSphere Namespace name' clarifies namespace, and 'vCenter target name' clarifies target. However, it lacks format details, examples, or explanation of target's purpose (default null suggests optional but why?).

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 the tool lists 'PVCs and storage usage for a vSphere Namespace'—specific verb, resource, and scope. It effectively distinguishes from sibling tools like list_namespaces (which lists namespaces themselves) and get_namespace (which gets general namespace metadata).

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 no guidance on when to use this tool versus alternatives such as list_supervisor_storage_policies or get_namespace. There are no prerequisites mentioned (e.g., that the namespace must exist) and no exclusion criteria.

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