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 the tool deletes a firewall group but doesn't disclose critical behavioral traits like whether deletion is permanent, requires specific permissions, has side effects (e.g., removing associated rules), or any rate limits. This is a significant gap for a destructive operation.

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 states the purpose, followed by structured sections for Args and Returns. However, the 'Returns' section could be integrated more seamlessly, and some redundancy exists (e.g., 'Args' label).

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 (destructive operation), lack of annotations, and presence of an output schema (which handles return values), the description is minimally adequate. It covers the purpose and parameter semantics but misses key behavioral details like safety warnings or prerequisites, leaving gaps for informed use.

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 schema: it explains that 'firewall_group_id' can be either an ID or a description (e.g., 'web-servers' or UUID), which clarifies the parameter's usage. With 0% schema description coverage and only one parameter, this adequately compensates.

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 ('Delete') and resource ('a firewall group'), making the purpose specific and understandable. However, it doesn't explicitly differentiate from sibling deletion tools like 'delete_rule' or 'delete_group' (if 'create_group' exists), though the resource type is implied.

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 lacks context about prerequisites (e.g., whether the group must be empty), exclusions, or comparisons to other deletion tools in the sibling list.

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