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gensecaihq

pfSense MCP Server

by gensecaihq

update_webgui_settings

Idempotent

Modify pfSense WebGUI configuration, adjusting port, protocol, SSL certificate, process limits, and security features like anti-lockout and DNS rebind checks.

Instructions

Update the WebGUI settings

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
portNoWebGUI listening port
protocolNoWebGUI protocol ('http' or 'https')
ssl_certrefNoSSL certificate reference ID
max_processesNoMaximum number of webConfigurator processes
noantilockoutNoDisable anti-lockout rule
nodnsrebindcheckNoDisable DNS rebinding checks
apply_immediatelyNoWhether to apply changes immediately
loginautocompleteNoAllow login autocomplete
nohttpreferercheckNoDisable HTTP referer enforcement

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

The description adds no behavioral context beyond the annotations. Annotations already indicate idempotent and non-destructive, but the description does not mention important details such as whether changes apply immediately (though apply_immediately is in the schema) or any effects on existing settings.

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 very concise at a single sentence, but it is under-specified for a tool with 9 parameters and an output schema. It lacks front-loaded detail about what specifically can be updated, making it minimally acceptable rather than well-structured.

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

Completeness2/5

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

Despite the rich schema and output schema, the description is insufficient for understanding the full scope of the tool. It does not communicate which settings can be changed, how apply_immediately works, or any post-update considerations, leaving gaps that the schema cannot fully bridge.

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?

With 100% schema description coverage, the input schema fully documents all 9 parameters. The description adds no additional meaning, so the baseline of 3 is appropriate; it does not hinder or help parameter understanding.

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

Purpose2/5

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

The description 'Update the WebGUI settings' is essentially a paraphrase of the tool name (update_webgui_settings), adding no new information. It states the action verb and resource but does not specify which settings are affected or how this differs from other update tools.

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 for when to use this tool versus alternatives. It does not mention the get_webgui_settings counterpart for reading settings, nor does it describe any prerequisites or scenarios where this update is appropriate.

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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