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UniFi MCP Server

UniFi MCP Server

by enuno
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Hybrid

get_host

Retrieve detailed information for a specific UniFi host by its ID, optionally targeting a selected controller.

Instructions

Get host details by ID.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "host_id": "<host_id>"
    },
    "name": "get_host"
  }
}

Input Schema

NameRequiredDescriptionDefault
host_idYesHost identifier
controllerNoController to run against (see list_controllers). Defaults to the controller chosen with select_controller, then the server default.

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv0.6.4
    • addedInput schema / properties / host_id / description
      Added value: +"Host identifier"
  2. Changed1 schema field changedv0.6.0
    • addedInput schema / properties / controller
      Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Controller to run against (see list_controllers). Defaults to the controller chosen with select_controller, then the server default."
+}
  3. First observedv0.2.0

TDQS

C2.9/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full behavioral burden. 'Get' implies a read, but the description does not disclose permissions, error behavior, whether it is strictly read-only, or any other operational trait.

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

Conciseness4/5

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

The description is a single front-loaded sentence with no filler. It is well structured for its length, though its terseness is part of what leaves usage and behavioral gaps.

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?

The tool is simple, has full schema parameter coverage, and has an output schema, so return values need not be described. However, for a tool with no annotations, the description is only minimally adequate and omits usage guidance and behavioral context.

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 both parameters are already documented in the schema. The phrase 'by ID' reinforces the required host_id, but adds little beyond what the schema provides.

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 specific verb and resource: 'Get host details by ID.' The 'by ID' phrasing distinguishes it from list-style siblings such as list_hosts, though it does not explicitly name any alternative.

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?

It implies the tool is used when a host ID is known, but gives no explicit when-to-use guidance, exclusions, or alternative tools such as list_hosts.

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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