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. It states 'Delete a VPC 2.0 network', implying a destructive mutation, but lacks details on permissions required, whether deletion is reversible, side effects (e.g., impact on attached instances), rate limits, or error conditions. The 'Returns' section mentions 'Success confirmation', but doesn't describe failure cases or output format.

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 with three sentences: purpose, parameter guidance, and return info. It's front-loaded with the main action. However, the 'Args:' and 'Returns:' sections are slightly redundant with structured fields, and the second sentence could be integrated more smoothly.

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 a destructive tool with no annotations, 0% schema coverage, but an output schema (implied by 'Has output schema: true'), the description is minimally adequate. It covers the basic action and parameter semantics but lacks critical behavioral context like safety warnings, prerequisites, or error handling. The output schema may detail return values, reducing the burden, but overall completeness is limited.

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 description adds significant meaning beyond the input schema, which has 0% coverage. It explains that 'vpc2_identifier' accepts either a 'VPC 2.0 description or ID' and mentions 'Smart identifier resolution', clarifying the parameter's purpose and format. With only one parameter, this compensates well for the schema gap, though it could specify format constraints (e.g., ID pattern).

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 ('Delete') and resource ('a VPC 2.0 network'), making the purpose specific and understandable. However, it doesn't explicitly differentiate from sibling tools like 'delete' (generic) or 'delete_vpc2' vs 'delete' (if 'delete' handles other resources), though 'VPC 2.0 network' implies a specific resource type.

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 is provided on when to use this tool versus alternatives. The description mentions 'Smart identifier resolution' for input, but this is parameter semantics, not usage context. There's no mention of prerequisites, dependencies, or when not to use it (e.g., if the VPC has attached resources).

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