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 states the tool creates a VPC 2.0 network but does not mention critical behavioral aspects like whether this is a destructive operation (likely not, as it creates), authentication requirements, rate limits, or potential side effects. The description adds minimal context beyond the basic action, leaving significant gaps in understanding the tool's 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 well-structured with a clear purpose statement followed by 'Args' and 'Returns' sections, making it easy to parse. It is appropriately sized with no redundant information, though the 'Returns' section could be slightly more detailed. Every sentence earns its place by providing essential information, but minor verbosity in formatting 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 complexity (5 parameters, creation operation), no annotations, and an output schema present (implied by 'Returns' section), the description is reasonably complete. It covers the purpose, parameters, and return values adequately. However, it lacks context on usage guidelines and behavioral traits, which are important for a creation tool, preventing a perfect score.

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%, meaning the input schema provides no descriptions for parameters. The description compensates fully by detailing each parameter's purpose, including examples (e.g., 'ewr' for region, 'v4' for ip_type) and defaults (e.g., ip_type defaults to 'v4', ip_block defaults to auto-assigned). This adds substantial meaning beyond the bare schema, making parameter usage clear and actionable.

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 specific action ('Create a new VPC 2.0 network') and resource ('VPC 2.0'), distinguishing it from sibling tools like 'get_vpc2', 'list_vpc2', 'update_vpc2', and 'delete_vpc2' by its creation function. It precisely communicates what the tool does without being vague or tautological.

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 does not mention prerequisites, such as required permissions or account status, nor does it differentiate from similar tools like 'create' or 'create_network_info' in the sibling list. Usage context is implied only by the tool name and description, with no explicit when/when-not statements.

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