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 the tool creates something, implying a write/mutation operation, but doesn't disclose behavioral traits like permissions needed, whether it's idempotent, rate limits, or what happens on failure. The description is minimal and lacks crucial operational context.

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 a clear main sentence followed by structured Args and Returns sections. It's front-loaded with the core purpose, though the 'Returns' section is vague ('Created startup script details') 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 2 parameters with 0% schema coverage and an output schema exists, the description does a fair job explaining parameters but lacks behavioral context (no annotations). It's minimally adequate for a creation tool but misses details on error handling, side effects, or output structure despite the output schema.

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%, so the description must compensate. It provides meaningful semantics: 'script_type' with enumerated values ('docker_install', 'nodejs_install', 'security_updates', 'ssh_setup') and 'ssh_port' with its purpose and default for 'ssh_setup'. This adds substantial value beyond the bare schema, though it doesn't fully document all parameter details like constraints.

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 creates a common startup script from templates, specifying the verb 'create' and resource 'common startup script'. It distinguishes from sibling 'create_startup_script' by specifying 'common' and 'from templates', though the distinction could be more explicit about what makes it 'common' versus the sibling.

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 explicit guidance on when to use this tool versus alternatives like 'create_startup_script' or other creation tools. The description mentions script types but doesn't provide context on when each type is appropriate or prerequisites for use.

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