Vultr MCP

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the action ('Reboot') and identifier resolution, but fails to disclose critical behavioral traits such as whether this requires specific permissions, if the reboot is graceful or forced, expected downtime, impact on running services, or any rate limits. For a destructive operation like rebooting a server, this is a significant gap in transparency.

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 in the first sentence. The additional sentences on identifier resolution and return value are useful, but the 'Args:' and 'Returns:' sections are somewhat redundant with the schema and could be integrated more seamlessly. Overall, it's efficient with minimal waste.

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 complexity (a destructive operation on a bare metal server), lack of annotations, and no output schema, the description is incomplete. It doesn't cover behavioral aspects like permissions needed, safety warnings, expected output details beyond 'Success message', or error conditions. For such a tool, more context is necessary to ensure safe and correct usage.

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 meaningful semantics beyond the input schema by explaining that 'server_identifier' accepts 'server label, hostname, or UUID' and noting 'Smart identifier resolution'. Since schema description coverage is 0% (the schema only specifies type and requirement), this compensates well by clarifying the parameter's purpose and acceptable values, though it could detail format constraints (e.g., UUID format).

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 action ('Reboot') and target resource ('a bare metal server'), making the purpose specific and understandable. However, it doesn't explicitly distinguish this tool from sibling tools like 'reboot' (which might be for different server types) or 'stop_bare_metal_server'/'start_bare_metal_server', missing full sibling differentiation.

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 some usage context by mentioning 'Smart identifier resolution' for server identification, which implies when to use this tool (when you need to reboot a bare metal server using various identifiers). However, it doesn't explicitly state when to choose this over alternatives like 'stop_bare_metal_server' followed by 'start_bare_metal_server', or when not to use it (e.g., during critical operations).

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