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juandvasquezp

hcloud-mcp-server

hcloud_list_security_group_rules

Retrieve security group rules for a specified region and group ID, with optional limit on results.

Instructions

List security group rules

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
regionYesRegion
security_group_idNoFilter by security group ID
limitNoMax results
Behavior2/5

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

No annotations are provided, and the description does not disclose any behavioral traits. It does not specify that the operation is read-only, whether authentication is required, or any side effects. The verb 'list' implies a safe read, but this is not explicitly stated.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise (3 words). While it is not verbose, it may be too minimal, lacking any additional context or structure. It earns its place but could benefit from a brief expansion to improve clarity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the low complexity (3 parameters, no output schema, no annotations), the description is minimally viable. It states the basic purpose but does not explain return values or any constraints. For a simple list tool, this is adequate but not complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, with each parameter having a description. The tool description does not add additional meaning beyond what the schema provides, so the score is at the baseline of 3. No extra context for parameters like expected formats or constraints.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'List security group rules' clearly states the action (list) and the resource (security group rules). It directly matches the tool name, making the purpose unambiguous. However, it does not differentiate from sibling tools like 'hcloud_list_security_groups', but the resource distinction is clear.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No usage guidelines are provided. The description does not mention when to use this tool versus alternatives such as 'hcloud_list_security_groups' or 'hcloud_show_security_group'. No context about prerequisites or typical scenarios is given.

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

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