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 returns a 'List of applications' but does not describe pagination, rate limits, authentication requirements, error handling, or what 'applications' entail (e.g., types, fields). For a read operation with zero annotation coverage, this is inadequate, warranting a score of 2.

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 and concise, with a clear purpose statement followed by 'Args' and 'Returns' sections. Each sentence adds value without redundancy. However, it could be slightly more front-loaded by integrating the parameter explanation into the main description, so it scores 4 instead of 5.

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 minimally adequate. It explains the purpose and parameter but lacks details on behavioral aspects like pagination or error handling. Without annotations or output schema, it should provide more context, but it meets basic requirements, resulting in a score of 3.

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 input schema has 1 parameter with 0% description coverage. The description compensates by explaining the 'vendor' parameter as 'Vendor name (e.g., "vultr", "LiteSpeed_Technologies")', adding semantic meaning and examples. Since there are no other parameters, this effectively covers the single parameter, earning a score of 4.

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 all applications from a specific vendor.' It specifies the verb ('Get'), resource ('applications'), and scope ('from a specific vendor'). However, it does not differentiate from sibling tools like 'list_applications' or 'search_applications', which limits its score to 4.

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 mentions the 'vendor' parameter but does not specify prerequisites, exclusions, or compare it to sibling tools like 'list_applications' or 'search_applications'. This lack of contextual guidance results in a score of 2.

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