Vultr MCP

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It describes the tool as a 'Get' operation, implying it's read-only, but doesn't specify permissions required, rate limits, error conditions, or what 'user data' entails (e.g., metadata, configuration, or usage data). The mention of 'Smart identifier resolution' adds some context, but overall, the behavioral details are insufficient for a mutation-free tool with zero annotation coverage.

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 sized and front-loaded, with the core purpose stated first, followed by parameter and return details. It avoids unnecessary fluff, but the 'Returns' section is vague ('User data information') and could be more specific to enhance clarity without adding bulk.

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 the tool has 1 parameter with 0% schema coverage and no output schema, the description provides basic context but is incomplete. It explains the parameter semantics and implies read-only behavior, but lacks details on output format, error handling, and how it differs from sibling tools. For a simple read tool, this is minimally adequate but has clear gaps.

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 schema description coverage is 0%, so the description must compensate. It explains the 'server_identifier' parameter by stating it can be 'server label, hostname, or ID,' which adds meaningful semantics beyond the schema's basic string type. However, it doesn't detail the format or constraints (e.g., UUID format, label conventions), leaving some gaps.

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 verb ('Get') and resource ('user data for a bare metal server'), making the purpose specific and understandable. However, it doesn't explicitly distinguish this tool from sibling tools like 'get_bare_metal_server' or 'get_bare_metal_server_summary', which might also retrieve server-related information.

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 some implied usage guidance by mentioning 'Smart identifier resolution: use server label, hostname, or UUID,' which suggests when to use this tool (when you have one of those identifiers). However, it lacks explicit guidance on when to use this tool versus alternatives like 'get_bare_metal_server' or other sibling tools, and doesn't mention any exclusions or prerequisites.

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