JS module providing discovery of the Arduino Create Plugin and communication with it

Usage no npm install needed!

<script type="module">
  import arduinoCreateAgentJsClient from '';


License: GPL v3 npm version


JS module providing discovery of the Arduino Create Agent and communication with it


npm install arduino-create-agent-js-client --save

How to use

import Daemon from 'arduino-create-agent-js-client';

const daemon = new Daemon('');

daemon.agentFound.subscribe(status => {
  // true / false

daemon.channelOpenStatus.subscribe(status => {
  // true / false

daemon.error.subscribe(err => {
  // handle err

// List available devices (serial/network)
daemon.devicesList.subscribe(({serial, network}) => {
  const  serialDevices = serial;
  const  networkDevices = network;

// Open serial monitor

// Read from serial monitor (ouputs string)
daemon.serialMonitorMessages.subscribe(message => {

// Read from serial monitor, output object with source port name
    "P": "dev/ttyACM0",
    "D":"output text here\r\n"
daemon.serialMonitorMessagesWithPort.subscribe(messageObj => {

// Write to serial monitor
daemon.writeSerial('port-name', 'message');

// Close serial monitor

// Upload sketch on serial target (desktop agent and chrome app)
daemon.uploadSerial(target, sketchName, compilationResult, verbose);

// Upload sketch on network target (daesktop agent only)
daemon.uploadNetwork(target, sketchName, compilationResult);

// Upload progress
daemon.uploading.subscribe(upload => {

// Download tool
daemon.downloadTool('toolname', 'toolversion' 'packageName', 'replacement');

// Download status
daemon.downloading.subscribe(download => {

Version 2

Version 2 of the arduino-create-agent aims to provide a cleaner api based on promises. It will remain confined to a v2 property on the daemon object until it will be stable. At the moment it only supports tool management.

daemon.agentV2Found.subscribe(daemonV2 => {
  if (!daemonV2) {
    // Your Agent doesn't support v2
  // Your Agent supports v2

  .then(tools => console.debug(tools)) // [{"name":"avrdude","version":"6.3.0-arduino9","packager":"arduino"}]

let payload = {
  name: 'avrdude',
  version: '6.3.0-arduino9',
  packager: 'arduino',
  url: '',
  checksum: 'SHA-256:f3c5cfa8d0b3b0caee81c5b35fb6acff89c342ef609bf4266734c6266a256d4f',
  signature: '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'
daemon.v2.installTool(payload) // Will install the tool in the system

Development and test features

Just run npm run dev and open your browser on http://localhost:8000

Agent communication

To enable communication between your local installation and the Arduino Create Agent add origins = http://localhost:8000 on your agent config.ini file (if you are using https, add origins = https://localhost:8000).

  • On macOs ~/Applications/ArduinoCreateAgent/
  • On Linux ~/ArduinoCreateAgent/config.ini
  • On Windows C:\Users\[your user]\AppData\Roaming\ArduinoCreateAgent