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dwin-gharibi

ArvanCloud MCP Server

by dwin-gharibi

arvan_list_firewall_rules

Read-only

List Web Application Firewall rules for a domain to view and audit active security policies.

Instructions

List firewall (WAF) rules for a domain.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
domainYes
Behavior3/5

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

Annotations already provide readOnlyHint=true and destructiveHint=false. The description 'List firewall rules' is consistent and adds no further behavioral context, such as pagination or rate limits, which is acceptable for a simple listing tool.

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

Conciseness5/5

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

A single, focused sentence with no extraneous words. Clearly conveys the action and resource.

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 tool's simplicity, the description covers the basic purpose. However, it lacks details on output format, whether all rules are returned at once, or any filtering possibilities, which could be useful for an agent.

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

Parameters2/5

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

The schema has 0% description coverage for its only parameter 'domain'. The description does not explain what the domain parameter expects (e.g., domain name format or examples), leaving the agent with minimal semantic information.

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

Purpose5/5

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

The description clearly states the verb 'List' and the resource 'firewall (WAF) rules' with a scope 'for a domain', distinguishing it from sibling tools like create, delete, or update firewall rules.

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 guidance on when to use this tool versus alternatives (e.g., for creating or deleting rules). The description does not mention that it is a read-only operation or provide context on when not to use it.

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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