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 of behavioral disclosure. It states the tool retrieves status information, implying a read-only operation, but doesn't cover critical aspects like error handling (e.g., what happens if the database_id is invalid or no migration exists), performance characteristics, or authentication requirements. This leaves significant gaps for an agent to understand behavior.

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: the first sentence clearly states the purpose, followed by structured 'Args' and 'Returns' sections. There's no wasted text, though the structure is slightly verbose for such a simple tool. Every sentence earns its place, making it efficient.

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 (one parameter, no output schema, no annotations), the description is moderately complete. It covers the basic purpose and parameter semantics but lacks usage guidelines and detailed behavioral context. Without annotations or output schema, it should do more to explain what 'Migration status information' includes or potential errors, leaving room for improvement.

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 minimal semantics beyond the input schema: it explains that 'database_id' is 'The database ID or label', clarifying it can be either an ID or a label. However, with 0% schema description coverage and only one parameter, this provides some value but doesn't fully compensate for the lack of schema details (e.g., format constraints). The baseline is 3 as it adds basic meaning.

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 with a specific verb ('Get') and resource ('status of an ongoing database migration'), making it immediately understandable. However, it doesn't explicitly differentiate from sibling tools like 'start_migration' or 'stop_migration' that might be related to the same domain, though the 'get' prefix inherently suggests a read operation.

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 no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., that a migration must be ongoing), exclusions, or related tools like 'start_migration' or 'stop_migration' from the sibling list. Usage is implied only by the name and description, lacking explicit context.

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