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 mentions the action ('Reinstall') which implies a destructive operation, but doesn't explicitly warn about data loss, downtime, or irreversible changes. It also doesn't describe authentication needs, rate limits, or what 'Reinstall status information' entails. For a destructive tool with zero annotation coverage, this leaves significant behavioral gaps.

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 well-structured with clear sections (purpose, args, returns) and uses minimal sentences. The purpose statement is front-loaded, and parameter explanations are concise. However, the 'Returns' section is somewhat vague ('Reinstall status information') and could be more specific about what information is included.

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 destructive operation with 2 parameters and no annotations, the description is moderately complete. It covers the basic purpose and parameters but lacks critical context about data loss, prerequisites, and detailed behavioral traits. The presence of an output schema means the description doesn't need to explain return values in detail, but it should provide more operational guidance for a tool that reinstalls operating systems.

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%, so the schema provides no parameter documentation. The description adds basic semantics for both parameters: 'instance_id' accepts ID, label, or hostname with examples, and 'hostname' is optional for setting a new hostname. However, it doesn't explain format constraints, validation rules, or what happens if hostname is omitted. This partially compensates for the schema gap but leaves important details unspecified.

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 ('Reinstall') and the resource ('an instance's operating system'), making the purpose immediately understandable. However, it doesn't distinguish this tool from potential siblings like 'reinstall_bare_metal_server' that appears in the sibling list, which suggests similar functionality for 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. It doesn't mention prerequisites (e.g., instance must be stopped), consequences (data loss), or compare it to related tools like 'reboot' or 'reinstall_bare_metal_server' from the sibling list. The agent must infer usage context entirely from the tool name and description alone.

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