Vultr MCP

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states the action is 'recycle (restart)', implying a mutation operation, but doesn't disclose critical behavioral traits like whether this causes downtime, requires specific permissions, has rate limits, or what 'recycle' entails beyond restarting. The return value description ('Recycle operation status') is 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 efficiently structured with a clear purpose statement, parameter explanations, and return value note in just four sentences. It's front-loaded with the core action and uses bullet-like formatting for parameters. No wasted words, though the 'smart identifier resolution' note could be more integrated.

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 mutation tool with 3 parameters, no annotations, and no output schema, the description covers the basic purpose and parameters adequately but lacks crucial behavioral context about downtime, permissions, or error conditions. It's minimally viable but leaves significant gaps for safe operation.

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?

With 0% schema description coverage, the description compensates well by listing all three parameters with clear explanations of their purpose ('cluster label or ID', 'node pool label or ID', 'node label or ID to recycle'). It adds meaningful context about identifier flexibility ('use cluster/node pool/node labels or UUIDs'), significantly enhancing understanding beyond the bare schema.

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 action ('recycle (restart)') and target ('a specific node'), providing a specific verb+resource combination. It distinguishes from siblings like 'delete_kubernetes_node' by specifying restart rather than deletion, but doesn't explicitly contrast with other restart-related tools like 'reboot' (which might apply to different resource types).

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 like 'reboot' or 'delete_kubernetes_node', nor does it mention prerequisites or contextual constraints. The 'smart identifier resolution' note hints at flexibility but doesn't offer decision criteria for tool selection.

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