Vultr MCP

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

With no annotations provided, the description carries full burden but only states it 'creates' without disclosing behavioral traits. It doesn't mention permissions required, cost implications, provisioning time, idempotency, or error handling. This is inadequate for a mutation tool with zero 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 core purpose first, followed by parameter and return sections. Every sentence serves a purpose, though the parameter list is lengthy but necessary given the high parameter count.

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 complex creation tool with 17 parameters, no annotations, and no output schema, the description is incomplete. It lacks behavioral context, usage guidelines, and detailed parameter explanations, making it insufficient for safe and effective tool invocation.

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 lists all 17 parameters with brief labels, adding some semantic meaning beyond the bare schema. However, it doesn't explain parameter relationships (e.g., os_id vs iso_id), constraints, or examples, leaving significant gaps.

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 ('Create') and resource ('bare metal server'), making the purpose unambiguous. However, it doesn't differentiate from sibling tools like 'create' or 'create_serverless_inference', which also create resources but different types.

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 like 'create' (generic) or other server creation tools. The description lacks context about prerequisites, dependencies, or typical use cases for bare metal servers.

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