Vultr MCP

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

No annotations are provided, so the description carries full burden for behavioral disclosure. While it mentions the tool returns a 'comprehensive overview', it doesn't specify whether this is a read-only operation, what permissions might be required, whether it's cached or real-time data, or any rate limits. For a status overview 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 appropriately concise with two sentences that directly address purpose and return value. The first sentence clearly states what the tool does, and the second provides additional context about the return format. There's no wasted verbiage or unnecessary elaboration.

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 tool with no annotations and no output schema, the description is insufficiently complete. While it mentions the tool returns a 'comprehensive overview', it doesn't describe what specific metrics or status indicators are included, the format of the response, or whether this aggregates data from multiple sources. Given the complexity implied by 'all subaccount statuses and key metrics', more detail would be helpful for the agent.

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 tool has zero parameters with 100% schema description coverage, so the schema already fully documents the input requirements. The description appropriately doesn't waste space discussing non-existent parameters, earning a strong baseline score. No additional parameter semantics are needed or provided.

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 with specific verbs ('Get an overview') and resources ('subaccount statuses and key metrics'), making it easy to understand what the tool does. However, it doesn't explicitly differentiate from sibling tools like 'get_account_info' or 'get_health_status' that might provide related information, preventing a perfect score.

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. With many sibling tools like 'get_account_info', 'get_health_status', and 'get_balance_summary' that might overlap in providing status or metric information, the agent receives no explicit or implicit direction about appropriate usage contexts or exclusions.

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