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 discloses that the tool retrieves 'detailed information' and supports 'Smart identifier resolution' (accepting either description or ID), which adds useful behavioral context beyond a basic read operation. However, it doesn't mention potential errors (e.g., if the VPC doesn't exist), authentication needs, rate limits, or whether it's idempotent. The description doesn't contradict any annotations (none exist).

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 front-loaded: the first sentence states the core purpose, followed by a key behavioral note ('Smart identifier resolution'), then explicitly lists args and returns. Each sentence adds value with zero waste. The bullet-like formatting for Args and Returns enhances readability without verbosity.

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 (single parameter, read-only operation) and the presence of an output schema (which handles return value details), the description is reasonably complete. It covers purpose, parameter semantics, and return content at a high level. However, for a tool with no annotations, it could benefit from more behavioral context like error handling or security requirements to be 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 input schema has 1 parameter with 0% description coverage. The description compensates by explaining 'vpc2_identifier: VPC 2.0 description or ID to retrieve,' adding semantic meaning that the schema lacks. It clarifies the parameter accepts either a description or ID, which is valuable for usage. However, it doesn't detail format constraints (e.g., ID syntax or description matching rules).

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 as 'Get detailed information about a specific VPC 2.0' with a specific verb ('Get') and resource ('VPC 2.0'). It distinguishes from siblings like 'list_vpc2' (which lists multiple VPCs) and 'create_vpc2'/'delete_vpc2' (which are write operations). However, it doesn't explicitly contrast with other get_* tools that retrieve different resources.

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 implies usage context through 'Smart identifier resolution: Use VPC 2.0 description or ID,' suggesting this tool is for retrieving a single VPC when you have its identifier. However, it doesn't explicitly state when to use this versus alternatives like 'list_vpc2' for browsing or other get_* tools for different resources. No exclusions or prerequisites are mentioned.

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