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gensecaihq

pfSense MCP Server

by gensecaihq

create_dhcp_address_pool

Create a DHCP address pool on a specified interface (e.g., LAN) by providing start and end IPs, with optional description and immediate application.

Instructions

Create a DHCP address pool for an interface

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
descrNoOptional description
range_toYesEnd IP address of the pool range
parent_idYesParent interface (e.g., 'lan', 'opt1')
range_fromYesStart IP address of the pool range
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 declare readOnlyHint=false and destructiveHint=false, so the safety profile is known. The description adds no additional behavioral context such as whether apply_immediately defers changes, validation behavior, or overlap handling. It does not contradict the annotations.

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 focused sentence with no filler. It front-loads the action and resource, making it immediately actionable and easy to parse.

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?

With complete schema coverage, annotations, and an output schema present, the description is minimally sufficient for a simple create operation. However, it lacks usage context such as when to call apply_dhcp_changes or how apply_immediately interacts with the broader change workflow, leaving it 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 description coverage is 100%, so a baseline of 3 is appropriate. The description adds minimal value beyond the schema, merely reinforcing that the pool belongs to an interface, but it does not clarify range semantics or apply_immediately behavior beyond what the schema already states.

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 uses a specific verb 'Create', identifies the exact resource 'DHCP address pool', and adds scope with 'for an interface'. It clearly distinguishes this from sibling update/delete/search_dhcp_address_pool 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 on when to use this tool versus alternatives, no prerequisites are mentioned, and there is no mention of related tools like apply_dhcp_changes or create_dhcp_static_mapping. The agent receives only a bare purpose statement.

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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