UniFi Protect MCP

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List sensors

protect_list_sensors

Read-only

List all sensors managed by UniFi Protect, including battery, motion, leak, and tamper status. Use limit and offset to page through large sites.

Instructions

List all sensors managed by UniFi Protect. Returns array; each sensor includes: id, modelKey, name, mac, state, type, guid, mountType, featureFlags (temperature, humidity, light, motion, waterLeak, open, tamper, smoke — each {channelCount}), batteryStatus (percentage, isLow), stats (light, humidity, temperature — each {value, status}), lightSettings / humiditySettings / temperatureSettings (isEnabled, margin, lowThreshold, highThreshold), isOpened, openStatusChangedAt, isMotionDetected, motionDetectedAt, motionSettings / glassBreakSettings (isEnabled, sensitivity, sensitivityWhenArmed), scheduleMode, armProfileIds, hasCustomSensitivityWhenArmed, alarmTriggeredAt, alarmSettings, leakDetectedAt, externalLeakDetectedAt, leakSettings (isInternalEnabled, isExternalEnabled), tamperingDetectedAt, wirelessConnectionState (signalState: signalQuality, signalStrength; batteryStatus: percentage, isLow; bridge) (7.3.70 docs). On a large site, use limit and offset to page; a paged result also returns totalCount and offset.

Input Schema

Name	Required	Description	Default
`limit`	No	Return at most this many items
`offset`	No	Skip this many items first (default 0)

Output Schema

Name	Required	Description
`offset`	No	Paged results only: the index of the first item returned
`result`	Yes	Array of items returned by the list endpoint
`totalCount`	No	Paged results only: the number of items in the whole list

Schema Changelog

Changes observed during successful MCP inspections.

Changed14 schema fields changedv2.15.0Oct 14, 2026

addedInput schema / $schema

Added value: +"http://json-schema.org/draft-07/schema#"

addedInput schema / properties / limit

Added value: +{
+  "description": "Return at most this many items",
+  "maximum": 9007199254740991,
+  "minimum": 1,
+  "type": "integer"
+}

addedInput schema / properties / offset

Added value: +{
+  "description": "Skip this many items first (default 0)",
+  "maximum": 9007199254740991,
+  "minimum": 0,
+  "type": "integer"
+}

changedOutput schema / additionalProperties
```
Previous value: -falseNew value: +{}
```

addedOutput schema / properties / offset

Added value: +{
+  "description": "Paged results only: the index of the first item returned",
+  "maximum": 9007199254740991,
+  "minimum": -9007199254740991,
+  "type": "integer"
+}

changedOutput schema / properties / result / items / properties / glassBreakSettings / description

Previous value: -"Glass-break detection settings (object)"New value: +"Glass-break detection settings (object: isEnabled, sensitivity, sensitivityWhenArmed)"

changedOutput schema / properties / result / items / properties / humiditySettings / description

Previous value: -"Humidity threshold settings (object)"New value: +"Humidity threshold settings (object: isEnabled, margin, lowThreshold, highThreshold)"

changedOutput schema / properties / result / items / properties / leakSettings / description

Previous value: -"Leak detection settings (object)"New value: +"Leak detection settings, read-only (object: isInternalEnabled, isExternalEnabled)"

changedOutput schema / properties / result / items / properties / lightSettings / description

Previous value: -"Light threshold settings (object)"New value: +"Light threshold settings (object: isEnabled, margin, lowThreshold, highThreshold)"

changedOutput schema / properties / result / items / properties / motionSettings / description

Previous value: -"Motion detection settings (object)"New value: +"Motion detection settings (object: isEnabled, sensitivity, sensitivityWhenArmed)"

changedOutput schema / properties / result / items / properties / stats / description

Previous value: -"Environmental stats (object: light, humidity, temperature)"New value: +"Environmental stats (object: light, humidity, temperature — each { value, status })"

changedOutput schema / properties / result / items / properties / temperatureSettings / description

Previous value: -"Temperature threshold settings (object)"New value: +"Temperature threshold settings (object: isEnabled, margin, lowThreshold, highThreshold)"

changedOutput schema / properties / result / items / properties / wirelessConnectionState / description

Previous value: -"Wireless link state (object: signalState, batteryStatus, bridge)"New value: +"Wireless link state (object: signalState { signalQuality, signalStrength }, batteryStatus { percentage, isLow }, bridge)"

addedOutput schema / properties / totalCount

Added value: +{
+  "description": "Paged results only: the number of items in the whole list",
+  "maximum": 9007199254740991,
+  "minimum": -9007199254740991,
+  "type": "integer"
+}

Changed3 schema fields changedv2.13.0Sep 20, 2026

addedOutput schema / properties / result / items / properties / featureFlags

Added value: +{
+  "description": "Sensor capability flags, added in 7.3.x (object: temperature, humidity, light, motion, waterLeak, open, tamper, smoke — each { channelCount })"
+}

addedOutput schema / properties / result / items / properties / guid

Added value: +{
+  "description": "Hardware MODEL GUID, shared by every unit of the same model. NOT a per-device identifier — use `id` to identify a device.",
+  "type": [
+    "string",
+    "null"
+  ]
+}

addedOutput schema / properties / result / items / properties / type

Added value: +{
+  "description": "Hardware model name, e.g. \"UVC G6 Turret\", \"UP Chime PoE\", \"UNVR-PRO\"",
+  "type": [
+    "string",
+    "null"
+  ]
+}

Changed12 schema fields changedv2.11.5Sep 13, 2026
- removedOutput schema / properties / result / items / properties / mac / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / mac / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / result / items / properties / modelKey / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / modelKey / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / result / items / properties / mountType / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / mountType / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / result / items / properties / name / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / name / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / result / items / properties / scheduleMode / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / scheduleMode / type
```
Added value: +[
+  "string",
+  "null"
+]
```
- removedOutput schema / properties / result / items / properties / state / anyOf
```
Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]
```
- addedOutput schema / properties / result / items / properties / state / type
```
Added value: +[
+  "string",
+  "null"
+]
```

Changed22 schema fields changedv2.7.5Jun 21, 2026

addedOutput schema / properties / result / items / properties / alarmSettings
```
Added value: +{
+  "description": "Alarm settings (object: isEnabled)"
+}
```

addedOutput schema / properties / result / items / properties / alarmTriggeredAt

Added value: +{
+  "description": "Last alarm timestamp in epoch ms (number)"
+}

addedOutput schema / properties / result / items / properties / armProfileIds

Added value: +{
+  "description": "Arm profile IDs this sensor belongs to (array of strings)"
+}

addedOutput schema / properties / result / items / properties / batteryStatus

Added value: +{
+  "description": "Battery status (object: percentage, isLow)"
+}

addedOutput schema / properties / result / items / properties / externalLeakDetectedAt

Added value: +{
+  "description": "Last external-leak timestamp in epoch ms (number)"
+}

addedOutput schema / properties / result / items / properties / glassBreakSettings
```
Added value: +{
+  "description": "Glass-break detection settings (object)"
+}
```
addedOutput schema / properties / result / items / properties / hasCustomSensitivityWhenArmed
```
Added value: +{
+  "description": "Custom armed sensitivity enabled (boolean)"
+}
```
addedOutput schema / properties / result / items / properties / humiditySettings
```
Added value: +{
+  "description": "Humidity threshold settings (object)"
+}
```
addedOutput schema / properties / result / items / properties / isMotionDetected
```
Added value: +{
+  "description": "Motion currently detected (boolean)"
+}
```

addedOutput schema / properties / result / items / properties / isOpened

Added value: +{
+  "description": "Open/close contact state (boolean)"
+}

addedOutput schema / properties / result / items / properties / leakDetectedAt

Added value: +{
+  "description": "Last leak timestamp in epoch ms (number)"
+}

addedOutput schema / properties / result / items / properties / leakSettings
```
Added value: +{
+  "description": "Leak detection settings (object)"
+}
```
addedOutput schema / properties / result / items / properties / lightSettings
```
Added value: +{
+  "description": "Light threshold settings (object)"
+}
```

addedOutput schema / properties / result / items / properties / motionDetectedAt

Added value: +{
+  "description": "Last motion timestamp in epoch ms (number)"
+}

addedOutput schema / properties / result / items / properties / motionSettings
```
Added value: +{
+  "description": "Motion detection settings (object)"
+}
```

addedOutput schema / properties / result / items / properties / mountType

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Mount type, e.g. \"door\", \"leak\", \"garage\""
+}

addedOutput schema / properties / result / items / properties / openStatusChangedAt

Added value: +{
+  "description": "Open-status change timestamp in epoch ms (number)"
+}

addedOutput schema / properties / result / items / properties / scheduleMode

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "description": "Schedule mode: \"always\" | \"when_armed\""
+}

addedOutput schema / properties / result / items / properties / stats

Added value: +{
+  "description": "Environmental stats (object: light, humidity, temperature)"
+}

addedOutput schema / properties / result / items / properties / tamperingDetectedAt

Added value: +{
+  "description": "Last tampering timestamp in epoch ms (number)"
+}

addedOutput schema / properties / result / items / properties / temperatureSettings
```
Added value: +{
+  "description": "Temperature threshold settings (object)"
+}
```

addedOutput schema / properties / result / items / properties / wirelessConnectionState

Added value: +{
+  "description": "Wireless link state (object: signalState, batteryStatus, bridge)"
+}

First observedv2.7.4Jun 11, 2026

TDQS

A3.8/5.0

Behavior4/5

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

Annotations already declare readOnlyHint, openWorldHint=false, and destructiveHint=false. The description adds useful behavioral context by explaining pagination behavior and that a paged result returns totalCount and offset, though it does not cover auth or rate limits.

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

Conciseness2/5

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

Front-loads the purpose, but the middle is an extensive enumeration of return fields that is redundant given the existing output schema. This bloats the description and violates the principle that every sentence should earn its place.

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

Completeness5/5

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

Given the tool's simplicity, the annotations, the 100%-covered schema, and the existing output schema, the description supplies all necessary context: it identifies the resource, return type, and pagination mechanism. The extra field list is overcomplete but does not leave gaps.

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 the schema already documents limit and offset. The description mentions using them to page but adds no syntax or semantic detail beyond what the schema provides.

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?

States a specific verb ('List') and resource ('sensors managed by UniFi Protect'), clearly distinguishing it from siblings like protect_get_sensor and protect_list_cameras.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides pagination guidance ('On a large site, use limit and offset to page') but does not explain when to choose this tool over protect_get_sensor or other list tools. Usage is implied rather than explicitly contrasted with alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.