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 mentions 'Smart identifier resolution' which adds some context about input flexibility, but it doesn't describe what 'details' are returned (e.g., status, configuration, usage), whether this is a read-only operation (implied by 'Get' but not explicit), or any potential errors or limitations. For a tool with no annotation coverage, this leaves significant gaps in understanding its behavior.

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 additional context and parameter details. It uses bullet points for 'Args' and 'Returns' for structure, making it easy to scan. However, the 'Returns' section is vague ('Bare metal server details'), which slightly reduces efficiency.

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's low complexity (1 parameter, no output schema, no annotations), the description is somewhat complete but has gaps. It explains the parameter well but lacks details on return values, error handling, or behavioral traits. Without annotations or output schema, the agent might struggle to understand what 'details' entail or how to handle edge cases, making this minimally adequate but not fully comprehensive.

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 adds meaningful semantics by explaining that 'server_identifier' accepts 'server label, hostname, or UUID,' which clarifies the parameter's purpose and valid formats beyond the schema's basic string type. However, it doesn't provide examples or constraints (e.g., format requirements), leaving some ambiguity.

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's purpose: 'Get details of a specific bare metal server.' It uses a specific verb ('Get') and resource ('bare metal server'), making the action explicit. However, it doesn't distinguish itself from potential sibling tools like 'get_bare_metal_server_summary' or 'list_bare_metal_servers', which might provide different levels or scopes of server 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 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 doesn't explicitly state when to use this tool versus alternatives like 'list_bare_metal_servers' for broader queries or 'get_bare_metal_server_summary' for different detail levels, nor does it mention any prerequisites or exclusions.

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