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gensecaihq

pfSense MCP Server

by gensecaihq

create_dns_host_override

Create a DNS host override entry to map a hostname to specific IP addresses in pfSense. Specify host, domain, IP list, optional aliases, and apply immediately.

Instructions

Create a DNS host override entry

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
ipYesList of IP addresses to resolve to (e.g., ["192.168.1.10"])
hostYesHostname (e.g., "server1")
descrNoOptional description
domainYesDomain name (e.g., "example.com")
aliasesNoOptional list of alias dicts, each with "host" and "domain" keys
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 and destructiveHint=false, so the description adds no new behavioral information. It does not mention the effect of apply_immediately, aliases handling, or any configuration state changes, providing no value beyond the schema.

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, concise sentence 'Create a DNS host override entry' that front-loads the core action with no unnecessary words or repetition.

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?

While the schema and annotations provide solid structured information, the description lacks contextual nuance such as distinguishing from the DNS forwarder counterpart or explaining the apply_immediately/alias behavior. For a create tool with many siblings, this is minimally 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?

The input schema has full (100%) coverage with clear descriptions for all six parameters, including examples for ip and host. The description itself adds no parameter details, so the baseline score of 3 is appropriate.

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 states a clear verb ('Create') and resource ('DNS host override entry'), and the tool name distinguishes it from search/update/delete siblings. However, it does not explicitly differentiate from the similar create_dns_forwarder_host_override tool, so the agent must rely on the name alone to distinguish.

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 create_dns_forwarder_host_override, nor any prerequisites or side-effect warnings. It simply states the action without context.

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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