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gensecaihq

pfSense MCP Server

by gensecaihq

update_dhcp_relay_settings

Idempotent

Modify DHCP relay settings on pfSense, including enabling/disabling, specifying destination servers, interfaces, and agent options, with immediate application.

Instructions

Update the DHCP relay settings

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
enableNoWhether to enable the DHCP relay
serverNoList of DHCP server IP addresses to relay to
interfaceNoList of interfaces to relay on
agentoptionNoWhether to append circuit ID and agent ID
apply_immediatelyNoWhether to apply changes immediately

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

Annotations already indicate readOnlyHint=false, idempotentHint=true, destructiveHint=false. The description adds no additional behavioral context, such as whether settings take effect immediately or require applying changes, nor any side effects.

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?

The description is a single sentence that is immediately readable and free of fluff, achieving excellent conciseness and front-loading.

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 simple nature of the tool, the schema and annotations provide most needed context. However, the description lacks mention of the apply_immediately behavior or relationship to apply_dhcp_changes, and does not emphasize that all parameters are optional. This leaves some ambiguity for an agent about the tool's effect.

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%, so the schema already documents all five parameters. The description adds no extra meaning beyond what the schema provides, so score is at baseline 3.

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 clearly states the action (update) and the resource (DHCP relay settings), distinguishing it from read-only siblings like get_dhcp_relay_settings. It is concise but doesn't specify which aspects are updated, though the schema enumerates them.

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?

The description provides no guidance on when to use this tool versus alternatives like get_dhcp_relay_settings or apply_dhcp_changes. No context on prerequisites or whether changes are staged.

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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