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. It states it 'Get[s]' data, implying a read-only operation, but doesn't disclose behavioral traits like authentication needs, rate limits, error conditions, or what 'IP whitelist entry details' includes. This leaves significant gaps for a tool with no 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 purpose, followed by structured sections for Args and Returns. Every sentence adds value, with no wasted words, though the 'Returns' section is vague and could be more specific.

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 no annotations, 0% schema coverage, and no output schema, the description is moderately complete. It covers the purpose and parameters well but lacks behavioral transparency and detailed return information. For a read tool with three parameters, it's adequate but has clear gaps in usage and output context.

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%, but the description compensates by explaining all three parameters: 'user_id' as 'The user ID (UUID) or email address', 'subnet' as 'The IP address or subnet', and 'subnet_size' as 'The subnet size (e.g., 24 for /24)'. This adds meaningful context beyond the bare schema, though it could be more detailed (e.g., format examples for subnet).

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 'specific IP whitelist entry for a user', making the purpose explicit. However, it doesn't distinguish from sibling tools like 'get_ip_whitelist' (which likely lists all entries) or 'remove_ip_whitelist_entry', missing full sibling differentiation.

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?

No guidance on when to use this tool versus alternatives like 'get_ip_whitelist' or 'add_ip_whitelist_entry' is provided. The description implies usage for retrieving a specific entry but lacks explicit context or exclusions, offering minimal guidance.

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