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smccauley-dev

Ubuntu SSH MCP Server

ufw_enable_disable

Enable or disable the UFW firewall on your Ubuntu server to control network access.

Instructions

Enable or disable the UFW firewall.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
aliasYes
enableYes
sudo_passwordNo
Behavior2/5

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

With no annotations, the brief description does not disclose whether sudo is required, side effects on existing rules, or the impact of toggling the firewall, leaving significant behavioral gaps.

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

Conciseness2/5

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

At only 4 words, the description is under-specified, sacrificing necessary detail for brevity. It lacks structure for a tool with multiple parameters.

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

Completeness1/5

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

Given 3 parameters, no output schema, and no annotations, the description fails to cover return values, parameter roles, or failure modes, making it wholly incomplete for reliable use.

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

Parameters1/5

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

Schema coverage is 0% and the description adds no meaning to the 3 parameters (alias, enable, sudo_password). Their purpose and constraints remain undefined.

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?

Description clearly states the verb ('enable or disable') and the resource ('UFW firewall'), making the tool's purpose unambiguous and distinguishing it from siblings like ufw_rule and ufw_status.

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 is provided on when to enable/disable vs. using siblings like ufw_status or ufw_rule, nor does it mention any prerequisites or best practices.

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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