GitHub - DarkJaeger/open-plaato-keg: Plaato-keg server

What is Open Plaato Keg?

Take control of your Plaato Keg and Plaato Airlock! This reverse-engineered solution bypasses the Plaato cloud, keeping your device data local and accessible even after the cloud service is discontinued.

Supports:

Plaato Keg — scale-based keg monitor with pour detection, temperature, and calibration
Plaato Airlock — fermentation sensor with bubble count (BPM) and temperature
Generic airlocks — any device that can POST to /api/airlocks/:id/data
Android companion app — native app for monitoring kegs and airlocks from your phone (open-plaato-keg-android)
iOS companion app — SwiftUI app for iPhone and iPad (open-plaato-keg-ios)

Why this exists?

Plaato has decided to stop manufacturing its homebrewing equipment (Airlock, Keg, and Valve). Additionally, the company will shut down the cloud backend that provides data storage and enables the Plaato app to function (announcement). This means the app will cease to work after November 2025, effectively ending the usability of the devices as they are currently designed.

How does this work?

The Plaato Keg uses the Blynk cloud platform, configured by Plaato, inivisible to users, for communication. This allows the mobile app to send and receive data from the keg.

Before:

graph LR
    A(Plaato Keg) <--> B{Blynk};
    B <--> C[Plaato App];

This local solution decodes the Blynk protocol, giving you the freedom to connect your Plaato Keg with any system or application you choose.

Now:

graph LR
    A(Plaato Keg) --> B{open-plaato-keg};
    G(Plaato Airlock) --> B;
    B <--> C[HTTP REST API];
    B --> D[WebSocket];
    B --> E[MQTT];
    B --> F[BarHelper];
    B --> H[Grainfather];
    B --> I[Brewfather];
    B <--> J[Android App];
    B <--> K[iOS App];

Setup

Plaato Keg

You need to reset your Plaato Keg to point it to your installation of open-plaato-keg. It is done by yellow key provided in the box, or a weak fridge magnet will also do the job.

Reset Steps (copied/compiled) from here and here:

Power on your Plaato Keg: All three LEDs will light up and blink slowly.
Flip your device over and carefully remove the yellow "Reset Key" on the bottom
Place the yellow "Reset Key" in the hole marked "Reset" also on the bottom of your Keg and hold it in for around 5 seconds (or place a fridge magnet on top of the two pins under the hole)
All three LEDs will turn off and come back on.

Configure steps:

Connect to your Plaato Keg - it will now expose Wifi hotspot with named PLAATO-XXXXX
Go to address http://192.168.4.1
Configuration settings will look something like this:

4A. Enter your:

WiFi SSID (beware, Plaato Keg only works on 2.4Ghz networks)
(Wifi) Password
Auth token - this is how you will identify your keg if you have more then one - this should be a 32 character hex string (meaning allowed characters are numbers and a-f small letters).
Host (IP address, or hostname) and port (see env variable below -> KEG_LISTENER_PORT) should point to your open-plaato-keg installation.

or 4B. Keg can be also configured via this endpoint (simple HTTP GET request with encoded query params):

http://192.168.4.1/config?ssid=My+Wifi&pass=my_password&blynk=00000000000000000000000000000001&host=192.168.0.123&port=1234

Plaato Airlock

The Plaato Airlock uses the same Blynk TCP protocol as the Keg, connecting to the same port (default: 1234). Configure it the same way as the Keg (reset, connect to hotspot, set host/port). The auth token you configure becomes the airlock's ID.

open-plaato-keg automatically detects whether an incoming TCP connection is from a Keg or an Airlock based on the virtual pins it sends:

Virtual Pin	Property	Description
V99	`error`	Error status
V100	`bubbles_per_min`	Cumulative bubble count (BPM derived from delta between readings)
V101	`temperature`	Fermentation temperature

Once connected, the airlock appears in the Airlocks section of the web UI.

Deployment

Docker Images

Docker images are built on Github Container Registry (ghcr.io).

Supported architectures: linux/amd64, linux/arm64

This means images work on:

Standard x86_64 servers and PCs
Raspberry Pi 4/5 (64-bit OS)
Apple Silicon Macs (M1/M2/M3)
AWS Graviton instances

Image:

ghcr.io/darkjaeger/open-plaato-keg:latest — latest stable release
ghcr.io/darkjaeger/open-plaato-keg:x.y.z — pinned semantic version

Simple run with defaults (exposing HTTP and binary listener port):

docker run --rm -it -p 1234:1234 -p 8085:8085 ghcr.io/darkjaeger/open-plaato-keg:latest

Docker Compose

Sample docker-compose:

version: "3.6"
services:
  open_plaato_keg:
    image: ghcr.io/darkjaeger/open-plaato-keg:latest
    container_name: open_plaato_keg
    ports:
      - 1234:1234
      - 8085:8085
    restart: always
    volumes:
      # Persist the database across container updates — without this your
      # keg data will be lost every time the container is recreated.
      # Unraid users: change the host path to your appdata share, e.g.
      #   /mnt/user/appdata/open-plaato-keg:/db
      - ./data:/db
    environment:
      - DATABASE_FILE_PATH=/db/keg_data.bin
      - KEG_LISTENER_PORT=1234
      - HTTP_LISTENER_PORT=8085
      - MQTT_ENABLED=true
      - MQTT_HOST=192.168.0.123
      - MQTT_PORT=1883
      - MQTT_USERNAME=mqtt_username
      - MQTT_PASSWORD=mqtt_password
      - MQTT_CLIENT=open_plaato_keg
      - BARHELPER_ENABLED=false
      - BARHELPER_API_KEY=
      - BARHELPER_KEG_MONITOR_MAPPING=plaato-auth-key:barhelper-custom-keg-monitor-id

Elixir releases

If Docker isn't your preferred method, you can create an Elixir Release and run it directly on your server. For managing project versions, using asdf with the .tool-versions](.tool-versions) file is recommended.

Environment variables

Name	Requirement	Default Value	Description
KEG_LISTENER_PORT	Optional	1234	TCP port for Plaato Keg connections
HTTP_LISTENER_PORT	Optional	8085	HTTP port for web UI and API
DATABASE_FILE_PATH	Optional	priv/db/keg_data.bin	Path to persistent database file
INCLUDE_UNKNOWN_DATA	Optional	false	Include unknown/undecoded pins in output
MQTT_ENABLED	Optional	false	Enable MQTT publishing
MQTT_HOST	Optional	localhost	MQTT broker hostname
MQTT_PORT	Optional	1883	MQTT broker port
MQTT_USERNAME	Optional	client	MQTT username
MQTT_PASSWORD	Optional	client	MQTT password
MQTT_CLIENT_ID	Optional	open_plaato_keg_local	MQTT client identifier
MQTT_TOPIC	Optional	plaato/keg	Base MQTT topic prefix
MQTT_JSON_OUTPUT	Optional	true	Publish all data as JSON to `{topic}/{keg_id}`
MQTT_PROPERTY_OUTPUT	Optional	true	Publish each property to `{topic}/{keg_id}/{property}`
BARHELPER_ENABLED	Optional	false	Enable BarHelper integration
BARHELPER_ENDPOINT	Optional	https://europe-west1-barhelper-app.cloudfunctions.net/api/customKegMon	BarHelper API endpoint
BARHELPER_API_KEY	Optional		Your BarHelper API key
BARHELPER_UNIT	Optional	l	Unit for BarHelper (l = liters)
BARHELPER_KEG_MONITOR_MAPPING	Optional	plaato-auth-key:barhelper-custom-keg-monitor-id	Mapping of Plaato IDs to BarHelper monitors

MQTT Output Modes

MQTT_JSON_OUTPUT (default: true)

Publishes the complete keg data as a single JSON object
Topic: plaato/keg/{keg_id}

Example payload:

  {
    "firmware_version": "2.0.10a",
    "chip_temperature_string": "74.44°C",
    "max_temperature": "30.000",
    "min_temperature": "0.000",
    "leak_detection": "0",
    "volume_unit": "litre",
    "wifi_signal_strength": "98",
    "temperature_unit": "°C",
    "beer_left_unit": "litre",
    "keg_temperature_string": "22.87°C",
    "fg": "1010",
    "og": "1050",
    "last_pour": "0.000",
    "keg_temperature": "22.875",
    "is_pouring": "255",
    "percent_of_beer_left": "12.000",
    "last_pour_string": "0.04L",
    "temperature_offset": "-7.500",
    "measure_unit": "2",
    "max_keg_volume": "18.812",
    "empty_keg_weight": "0.000",
    "amount_left": "3.802",
    "unit": "1",
    "internal": {
      "ver": "2.0.10a",
      "tmpl": "TMPL57889",
      "h-beat": "20",
      "fw": "2.0.10a",
      "dev": "ESP32",
      "build": "Jul 20 2020 12:31:35",
      "buff-in": "1024"
    },
    "id": "00000000000000000000000000000001",
    "my_label": "Basement Tap",
    "my_beer_style": "IPA",
    "my_keg_date": "12.01.2025",
    "my_og": "1.050",
    "my_fg": "1.010",
    "my_abv": "5.25"
  }

MQTT_PROPERTY_OUTPUT (default: false)

Publishes each property to a separate subtopic
Topics: plaato/keg/{keg_id}/{property_name}
Example topics:
- plaato/keg/abc123/amount_left → 15.5
- plaato/keg/abc123/keg_temperature → 4.2
- plaato/keg/abc123/percent_of_beer_left → 12.0
- plaato/keg/abc123/my_og → 1.050
- plaato/keg/abc123/my_fg → 1.010
- plaato/keg/abc123/my_abv → 5.25
Useful for Home Assistant MQTT discovery or simple automations

Both modes can be enabled simultaneously.

Integrations

Web UI

The web UI is served on the configured HTTP port. All pages update in real time via WebSocket.

`/index.html` — Tap List

Displays your configured tap list with live keg data:

Tap cards show: tap name, beer name and brewery, keg label, pour status, last pour amount, and remaining volume with progress bar
Tap handle images are shown if configured
Links to the tap setup page for editing

`/taplist-setup.html` — Tap Setup

Configure your tap list:

Create and edit taps — assign a name, keg, brewery, beer style, description, tasting notes, and ABV
Load beer details from the beverage library
Upload and assign tap handle images

`/setup.html` — Keg Setup

Configure and control connected kegs:

Set units (metric/imperial), measure mode (weight/volume), sensitivity, and keg mode
Calibrate the scale, set empty keg weight, and adjust temperature offset
Set beer information (style, date, OG, FG, ABV) and a friendly keg label
View live keg status

`/airlock-setup.html` — Airlock Setup

Configure airlocks and fermentation integrations:

Enable/disable airlock support
Set a friendly label per airlock device
Configure Grainfather and Brewfather forwarding per airlock

`/beverages.html` — Beverage Library

Manage a library of beers and beverages to reuse across tap setups:

Add, edit, and delete beverages with name, brewery, style, ABV, IBU, OG, FG, SRM color, description, and tasting notes
Import directly from Brewfather batches (requires Brewfather credentials in Settings)

Android Companion App

A native Android app is available at open-plaato-keg-android.

Features:

Live tap list with keg data updated via WebSocket
Keg scale configuration and calibration
Airlock monitoring with BPM and temperature
Beverage library management with Brewfather batch import
Pour notifications — fires a local notification when a pour is detected (configurable, ≥ 5 oz threshold to suppress scale noise)
Settings for server URL, airlock support, and Brewfather credentials

iOS Companion App

A native SwiftUI app for iPhone and iPad is available at open-plaato-keg-ios.

Requires iOS 16+ and an open-plaato-keg server running on your local network.

Features:

Live tap list with keg levels, temperature, and pour status
Full keg details with beer info
Airlock monitoring with BPM and temperature readings
Beverage library management
Configurable server URL via Settings tab

HTTP REST API

`/api/config`

Method: GET
Description: Returns the current server-side app configuration.
Response:
```
{ "airlock_enabled": true }
```

`POST /api/config/airlock-enabled`

Description: Enable or disable Plaato Airlock support.
Body: { "enabled": true }

`/api/kegs`

Method: GET
Description: Retrieves a list of all kegs connected to the Plaato Keg device.

Response: An array of JSON objects, each representing a keg.

Example Response:

  [
     {
        "firmware_version": "2.0.10a",
        "chip_temperature_string": "74.44°C",
        "max_temperature": "30.000",
        "min_temperature": "0.000",
        "leak_detection": "0",
        "volume_unit": "litre",
        "wifi_signal_strength": "98",
        "temperature_unit": "°C",
        "beer_left_unit": "litre",
        "keg_temperature_string": "22.87°C",
        "fg": "1010",
        "og": "1050",
        "last_pour": "0.000",
        "keg_temperature": "22.875",
        "is_pouring": "255",
        "percent_of_beer_left": "12.000",
        "last_pour_string": "0.04L",
        "temperature_offset": "-7.500",
        "measure_unit": "2",
        "max_keg_volume": "18.812",
        "empty_keg_weight": "0.000",
        "amount_left": "3.802",
        "unit": "1",
        "internal": {
          "ver": "2.0.10a",
          "tmpl": "TMPL57889",
          "h-beat": "20",
          "fw": "2.0.10a",
          "dev": "ESP32",
          "build": "Jul 20 2020 12:31:35",
          "buff-in": "1024"
        },
        "id": "00000000000000000000000000000001",
        "my_beer_style": "IPA",
        "my_keg_date": "12.01.2025",
        "my_og": "1.050",
        "my_fg": "1.010",
        "my_abv": "5.25"
      }
  ]

Fields in Response:
- id: Unique identifier for the keg (32-character hex string from auth token)
- amount_left: Current amount of beer left in the keg
- percent_of_beer_left: Percentage of beer remaining (0-100)
- max_keg_volume: Maximum keg volume
- empty_keg_weight: Weight of the empty keg
- last_pour: Amount of the last pour
- last_pour_string: Formatted last pour with unit
- is_pouring: Pour status (0 = not pouring, non-zero = pouring)
- keg_temperature: Current keg temperature
- keg_temperature_string: Formatted temperature with unit
- temperature_offset: Temperature calibration offset
- chip_temperature_string: ESP32 chip temperature
- unit: Unit system (1 = Metric, 2 = US)
- measure_unit: Measure mode setting
- beer_left_unit: Display unit for beer amount (litre, kg, gal, lbs)
- volume_unit: Volume unit setting
- temperature_unit: Temperature unit (°C or °F)
- wifi_signal_strength: WiFi signal strength percentage
- firmware_version: Keg firmware version
- leak_detection: Leak detection status
- min_temperature / max_temperature: Temperature alert thresholds
- og / fg: Original and final gravity values (from hardware)
- internal: System info object (dev, ver, fw, build, tmpl, h-beat, buff-in)
- my_label: User-defined friendly keg name, shown on the dashboard (stored locally)
- my_beer_style: User-defined beer style (stored locally)
- my_keg_date: User-defined keg date (stored locally)
- my_og: User-defined original gravity in format 1.xxx (stored locally)
- my_fg: User-defined final gravity in format 1.xxx (stored locally)
- my_abv: Calculated ABV percentage from OG and FG (stored locally)

`/api/kegs/{keg_id}`

Method: GET
Description: Retrieves details for a specific keg.
Path Parameter:
- keg_id: The unique ID of the keg.
Response: A JSON object representing the keg (same fields as /api/kegs).

`/api/kegs/devices`

Method: GET
Description: Retrieves a list of the device IDs connected/offline in the Plaato Keg system.
Response: An array of strings, where each string is a device ID.
- Example Response:
```
["00000000000000000000000000000001"]
```

`/api/kegs/connected`

Method: GET
Description: Lists kegs with an active TCP connection right now.
Response: Array of keg ID strings.

Keg Command Endpoints

Send commands to a connected keg:

Endpoint	Body	Description
`POST /api/kegs/:id/tare`	—	Tare the scale
`POST /api/kegs/:id/tare-release`	—	Release tare
`POST /api/kegs/:id/empty-keg`	—	Store current scale reading as empty keg reference
`POST /api/kegs/:id/empty-keg-release`	—	Release empty keg
`POST /api/kegs/:id/empty-keg-weight`	`{"value": 4.0}`	Set empty keg reference weight directly (kg or lbs)
`POST /api/kegs/:id/max-keg-volume`	`{"value": 19.5}`	Set max keg volume
`POST /api/kegs/:id/temperature-offset`	`{"value": -2.5}`	Adjust temperature calibration offset
`POST /api/kegs/:id/calibrate-known-weight`	`{"value": 5000}`	Calibrate with known weight (grams)
`POST /api/kegs/:id/reset-last-pour`	—	Reset last pour value to zero
`POST /api/kegs/:id/unit`	`{"value": "metric"\|"us"}`	Set unit system (immediately updates display units)
`POST /api/kegs/:id/measure-unit`	`{"value": "weight"\|"volume"}`	Set measure mode (immediately updates display units)
`POST /api/kegs/:id/keg-mode`	`{"value": "beer"\|"co2"}`	Set keg mode (experimental)
`POST /api/kegs/:id/sensitivity`	`{"value": "low"\|"medium"\|"high"\|"very_low"}`	Set pour detection sensitivity
`POST /api/kegs/:id/label`	`{"value": "Basement Tap"}`	Set friendly keg label (stored locally)
`POST /api/kegs/:id/beer-style`	`{"value": "IPA"}`	Set beer style (stored locally + sent to keg)
`POST /api/kegs/:id/date`	`{"value": "01.01.2025"}`	Set keg date (stored locally + sent to keg)
`POST /api/kegs/:id/og`	`{"value": "1.050"}`	Set original gravity (stored locally)
`POST /api/kegs/:id/fg`	`{"value": "1.010"}`	Set final gravity (stored locally)
`POST /api/kegs/:id/abv`	`{"og": "1.050", "fg": "1.010"}`	Calculate & store ABV
`POST /api/kegs/:id/delete`	—	Remove a keg's stored data

Airlock REST API

`/api/airlocks`

Method: GET
Description: Retrieves data for all known airlocks.

Response: Array of airlock objects.

Example Response:

[
  {
    "id": "my-airlock-1",
    "label": "Primary",
    "temperature": "20.5",
    "bubbles_per_min": "2.3",
    "error": "0"
  }
]

`/api/airlocks/:id`

Method: GET
Description: Retrieves data for a single airlock.
Response: Airlock object, or 404 if not found.

`/api/airlocks/:id/data`

Method: POST
Description: Submit temperature and/or BPM for an airlock. At least one field required.

Body:

{ "temperature": "20.5", "bubbles_per_min": "2.3" }

`/api/airlocks/:id/label`

Method: POST
Description: Set a human-readable label for the airlock.
Body: { "value": "Primary" }

`/api/airlocks/:id/grainfather`

Method: POST
Description: Configure Grainfather integration for this airlock.

Body:

{ "enabled": true, "unit": "celsius", "specific_gravity": "1.050", "url": "https://local.community.grainfather.com/iot/.../custom" }

url is the per-airlock Grainfather endpoint URL (found in your Grainfather session). Sending is skipped if the URL is not set.
When enabled, airlock data is forwarded to the Grainfather community web app at most once every 15 minutes (requires temperature; BPM is optional).

`/api/airlocks/:id/brewfather`

Method: POST
Description: Configure Brewfather custom stream forwarding for this airlock.

Body:

{ "enabled": true, "unit": "celsius", "specific_gravity": "1.050", "og": "1.060", "batch_volume": "20.0", "url": "https://log.brewfather.net/stream?id=..." }

url is the per-airlock Brewfather custom stream URL (found in your Brewfather batch). Sending is skipped if the URL is not set.
When enabled, temperature and BPM data are forwarded to Brewfather at most once every 15 minutes.

Tap List API

`/api/taps`

Method: GET
Description: Returns all configured taps.
Response: Array of tap objects.

`/api/taps/:id`

Method: GET / POST
Description: Get or save a tap. Use id = "new" to create a new tap.

Body (POST):

{
  "name": "Basement Tap",
  "tap_number": 1,
  "keg_id": "00000000000000000000000000000001",
  "brewery": "Home Brew Co",
  "description": "A hoppy IPA",
  "tasting_notes": "Citrus, pine",
  "abv": "5.5",
  "handle_image": "my-tap.jpg"
}

`/api/taps/:id/delete`

Method: POST
Description: Delete a tap.

`/api/tap-handles`

Method: GET
Description: Returns a list of uploaded tap handle image filenames.

`POST /api/tap-handles/upload`

Description: Upload a tap handle image (multipart form, field file). Returns the stored filename.

`POST /api/tap-handles/:filename/delete`

Description: Delete an uploaded tap handle image.

`GET /uploads/tap-handles/:filename`

Description: Serves uploaded tap handle images.

Beverage Library API

`/api/beverages`

Method: GET
Description: Returns all beverages in the library.
Response: Array of beverage objects.

`/api/beverages/:id`

Method: GET / POST
Description: Get or save a beverage. Use id = "new" to create.

Body (POST):

{
  "name": "Session IPA",
  "brewery": "Home Brew Co",
  "style": "IPA",
  "abv": 4.5,
  "ibu": 40,
  "og": 1.048,
  "fg": 1.010,
  "srm": 6,
  "color": "#f5a623",
  "description": "A light, hoppy IPA",
  "tasting_notes": "Citrus, floral"
}

`POST /api/beverages/:id/delete`

Description: Delete a beverage from the library.

Brewfather Import API

`GET /api/config/brewfather`

Description: Returns whether Brewfather credentials are configured.
Response: { "configured": true }

`POST /api/config/brewfather`

Description: Save Brewfather API credentials (stored server-side).
Body: { "user_id": "abc123", "api_key": "your-api-key" }

`GET /api/brewfather/batches`

Description: Fetches your Brewfather batch list (requires credentials configured).
Response: Array of batch summaries: [{ "id": "...", "name": "...", "style": "...", "status": "..." }]

`POST /api/brewfather/import/:batch_id`

Description: Import a Brewfather batch as a beverage in the local library.
Response: The newly created beverage object.

`/api/metrics`

Method: GET
Description: Exposes metrics in Prometheus format
Response: plaato_keg_weight and plaato_keg_temperature are exposed alongside with Elixir metrics.

plaato_keg{id="00000000000000000000000000000001",type="keg_temperature"} 23.0
plaato_keg{id="00000000000000000000000000000001",type="leak_detection"} 0.0
plaato_keg{id="00000000000000000000000000000001",type="og"} 1.0e3
plaato_keg{id="00000000000000000000000000000001",type="max_keg_volume"} 19.0
plaato_keg{id="00000000000000000000000000000001",type="last_pour"} 0.0
plaato_keg{id="00000000000000000000000000000001",type="amount_left"} -0.1
plaato_keg{id="00000000000000000000000000000001",type="max_temperature"} 30.0
plaato_keg{id="00000000000000000000000000000001",type="min_temperature"} 0.0
plaato_keg{id="00000000000000000000000000000001",type="temperature_offset"} -7.5
plaato_keg{id="00000000000000000000000000000001",type="empty_keg_weight"} 0.0
plaato_keg{id="00000000000000000000000000000001",type="measure_unit"} 2.0
plaato_keg{id="00000000000000000000000000000001",type="fg"} 1.0e3
plaato_keg{id="00000000000000000000000000000001",type="percent_of_beer_left"} 0.0
plaato_keg{id="00000000000000000000000000000001",type="wifi_signal_strength"} 88.0
plaato_keg{id="00000000000000000000000000000001",type="unit"} 1.0
plaato_keg{id="00000000000000000000000000000001",type="is_pouring"} 0.0

`/api/alive`

Method: GET
Description: Returns if webserver is started
Response: 200 OK with body containing server version string

WebSocket

All updates can be received via WebSocket at /ws.

const socket = new WebSocket('/ws');
socket.addEventListener('message', (event) => {
  const msg = JSON.parse(event.data);

  if (msg.type === 'airlock') {
    // Airlock update: { type: "airlock", data: { id, label, temperature, bubbles_per_min, ... } }
    console.log('Airlock update', msg.data);
  } else {
    // Keg update: full keg object (same format as /api/kegs/:id)
    console.log('Keg update', msg);
  }
});

Keg messages are the full keg data object (same format as GET /api/kegs/:id).

Airlock messages have a type: "airlock" wrapper:

{
  "type": "airlock",
  "data": {
    "id": "my-airlock-1",
    "label": "Primary",
    "temperature": "20.5",
    "bubbles_per_min": "2.3"
  }
}

MQTT (optional)

If enabled, open-plaato-keg can send updates to MQTT topic. Updates are the same model as REST API call (JSON), and will be published on plaato/keg/{keg_id} topic (prefix is changable by MQTT_TOPIC env variable). See MQTT_* environment variables.

BarHelper (optional)

If enabled open-plaato-keg can send updates to BarHelper via Custom Keg Monitor integration.

Steps:

Refer to the documentation https://docs.barhelper.app/english/settings/custom-keg-monitor and create Custom Keg Monitor and take note of the Id Number and your API key

Environment variables to set:

BARHELPER_ENABLED=true
BARHELPER_ENDPOINT - you can leave the default (https://europe-west1-barhelper-app.cloudfunctions.net/api/customKegMon)
BARHELPER_API_KEY - your API key
BARHELPER_UNIT- you can leave the default if it is liters
BARHELPER_KEG_MONITOR_MAPPING
- configuration in CSV key-value format:
  - "plaato-auth-key:barhelper-custom-keg-monitor-id,plaato-auth-key:barhelper-custom-keg-monitor-id"
  - eg. "00000000000000000000000000000001:custom-1"

Grainfather (optional)

Per-airlock Grainfather forwarding sends temperature, BPM, and specific gravity to the Grainfather community web app. Configure via /api/airlocks/:id/grainfather or the Airlock Setup page. Data is forwarded at most once every 15 minutes per airlock.

Brewfather (optional)

Per-airlock Brewfather forwarding sends temperature, BPM, specific gravity, and other fermentation data to a Brewfather custom stream URL. Configure via /api/airlocks/:id/brewfather or the Airlock Setup page. Data is forwarded at most once every 15 minutes per airlock.

Brewfather batch import allows you to pull batch details from Brewfather into the local beverage library. Configure credentials via the Settings page or POST /api/config/brewfather, then browse and import batches via GET /api/brewfather/batches and POST /api/brewfather/import/:batch_id.

Name		Name	Last commit message	Last commit date
Latest commit History 286 Commits
.claude		.claude
.github/workflows		.github/workflows
.readme		.readme
.release		.release
User Guides		User Guides
config		config
etc		etc
firmware		firmware
lib		lib
local		local
priv		priv
test		test
.dockerignore		.dockerignore
.formatter.exs		.formatter.exs
.gitignore		.gitignore
.tool-versions		.tool-versions
CLAUDE.md		CLAUDE.md
Dockerfile		Dockerfile
GEMINI.md		GEMINI.md
LICENSE		LICENSE
README.md		README.md
docker-compose.yaml		docker-compose.yaml
mix.exs		mix.exs
mix.lock		mix.lock

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What is Open Plaato Keg?

Why this exists?

How does this work?

Before:

Now:

Setup

Plaato Keg

Plaato Airlock

Deployment

Docker Images

Docker Compose

Elixir releases

Environment variables

MQTT Output Modes

Integrations

Web UI

/index.html — Tap List

/taplist-setup.html — Tap Setup

/setup.html — Keg Setup

/airlock-setup.html — Airlock Setup

/beverages.html — Beverage Library

Android Companion App

iOS Companion App

HTTP REST API

/api/config

POST /api/config/airlock-enabled

/api/kegs

/api/kegs/{keg_id}

/api/kegs/devices

/api/kegs/connected

Keg Command Endpoints

Airlock REST API

/api/airlocks

/api/airlocks/:id

/api/airlocks/:id/data

/api/airlocks/:id/label

/api/airlocks/:id/grainfather

/api/airlocks/:id/brewfather

Tap List API

/api/taps

/api/taps/:id

/api/taps/:id/delete

/api/tap-handles

POST /api/tap-handles/upload

POST /api/tap-handles/:filename/delete

GET /uploads/tap-handles/:filename

Beverage Library API

/api/beverages

/api/beverages/:id

POST /api/beverages/:id/delete

Brewfather Import API

GET /api/config/brewfather

POST /api/config/brewfather

GET /api/brewfather/batches

POST /api/brewfather/import/:batch_id

/api/metrics

/api/alive

WebSocket

MQTT (optional)

BarHelper (optional)

Grainfather (optional)

Brewfather (optional)

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`/index.html` — Tap List

`/taplist-setup.html` — Tap Setup

`/setup.html` — Keg Setup

`/airlock-setup.html` — Airlock Setup

`/beverages.html` — Beverage Library

`/api/config`

`POST /api/config/airlock-enabled`

`/api/kegs`

`/api/kegs/{keg_id}`

`/api/kegs/devices`

`/api/kegs/connected`

`/api/airlocks`

`/api/airlocks/:id`

`/api/airlocks/:id/data`

`/api/airlocks/:id/label`

`/api/airlocks/:id/grainfather`

`/api/airlocks/:id/brewfather`

`/api/taps`

`/api/taps/:id`

`/api/taps/:id/delete`

`/api/tap-handles`

`POST /api/tap-handles/upload`

`POST /api/tap-handles/:filename/delete`

`GET /uploads/tap-handles/:filename`

`/api/beverages`

`/api/beverages/:id`

`POST /api/beverages/:id/delete`

`GET /api/config/brewfather`

`POST /api/config/brewfather`

`GET /api/brewfather/batches`

`POST /api/brewfather/import/:batch_id`

`/api/metrics`

`/api/alive`

Packages