Sparkplug B MCP Server

io.github.nagarjunr/sparkplug-b

Repository Registry

What is the Sparkplug B MCP server?

MCP server for Sparkplug B: node/device discovery, metrics, commands, host state over MQTT.

How to install Sparkplug B

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

SPARKPLUG_MQTT_HOST
required
MQTT broker hostname or IP.
SPARKPLUG_HOST_ID
required
This connector's Sparkplug Host Application ID (used in the spBv1.0/STATE/{id} topic).
SPARKPLUG_MQTT_PORT
MQTT broker port, default 1883
SPARKPLUG_MQTT_USERNAME
Broker username, if required
SPARKPLUG_MQTT_PASSWORD
secret
Broker password, if required
SPARKPLUG_MQTT_USE_TLS
true/false, default false
SPARKPLUG_GROUP_ID
Restrict discovery/watching to a single Sparkplug Group ID; omit to subscribe to every group

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "sparkplug-b": {
      "command": "uvx",
      "args": [
        "sparkplug-b-mcp-server"
      ],
      "env": {
        "SPARKPLUG_MQTT_HOST": "<YOUR_SPARKPLUG_MQTT_HOST>",
        "SPARKPLUG_HOST_ID": "<YOUR_SPARKPLUG_HOST_ID>",
        "SPARKPLUG_MQTT_PORT": "<YOUR_SPARKPLUG_MQTT_PORT>",
        "SPARKPLUG_MQTT_USERNAME": "<YOUR_SPARKPLUG_MQTT_USERNAME>",
        "SPARKPLUG_MQTT_PASSWORD": "<YOUR_SPARKPLUG_MQTT_PASSWORD>",
        "SPARKPLUG_MQTT_USE_TLS": "<YOUR_SPARKPLUG_MQTT_USE_TLS>",
        "SPARKPLUG_GROUP_ID": "<YOUR_SPARKPLUG_GROUP_ID>"
      }
    }
  }
}