Web / Node.js Matter SDK

import { MatterClient } from "@matter-server/ws-client";

// Connect to local matterjs-server
const client = new MatterClient("ws://localhost:5580/ws");
await client.startListening();

// View commissioned devices
const nodes = client.nodes;

// Send device command: toggle light (endpoint 1, cluster 6 = OnOff)
await client.deviceCommand(nodeId, 1, 6, "toggle");

// Listen for device state changes
client.addEventListener("nodes_changed", (event) => {
    console.log("State changed:", event);
});

import { CommissioningController } from "@matter/main";
import { OnOff } from "@matter/main/clusters";

// Create and start controller
const controller = new CommissioningController({
    environment: { environment, id: "MyController" },
    autoConnect: true,
});
await controller.start();

// Get commissioned device endpoint
const node = controller.getNode(nodeId);
const endpoint = node.getEndpoint(1);

// Control device via Cluster API
const onOffCluster = endpoint.getClusterClient(OnOff.Cluster);
await onOffCluster.toggle();

import { MatterClient } from "@matter-server/ws-client";

const client = new MatterClient("ws://localhost:5580/ws");
await client.startListening();

// After commissioning the server does a wildcard read; the node data holds every raw attribute
// Keys are "endpoint/cluster/attribute" (decimal), the same format as Home Assistant diagnostics
const attrs = client.nodes[nodeId].attributes;

const endpoints = attrs["0/29/3"];          // Descriptor.PartsList → [1]
for (const ep of endpoints) {
  const types = attrs[`${ep}/29/0`];        // DeviceTypeList → [{ "0": 10, "1": 3 }]  10 = 0x000A Door Lock
  const servers = attrs[`${ep}/29/1`];      // ServerList → [3, 29, 47, 257]
  console.log(ep, types, servers);
}

const vendorName = attrs["0/40/1"];         // BasicInformation.VendorName
const lockFeatures = attrs["1/257/65532"];  // DoorLock.FeatureMap