MQTT-Plug brings live MQTT data directly into WordPress using secure WebSocket connections.
It is designed for developers, IoT experimenters, and small production deployments that want real-time visibility without building a custom frontend.

Unlike traditional MQTT tools, MQTT-Plug focuses on embedding live data into WordPress pages, posts, and dashboards, while keeping credentials safe and configuration simple.

Key Features

Connect to MQTT brokers over WS/WSS
Live message stream and event log
Topic-based subscriptions
Shortcode-driven embeds
Works with public or authenticated dashboards
Designed for modern MQTT backends (Mosquitto, EMQX, HiveMQ, The-Link-Builders, managed brokers)
No external Node services required
Lightweight; no tracking, no telemetry, no lock-in

MQTT-Plug is infrastructure-agnostic. You control your broker, topics, and data flow.

Configuration

In Settings MQTT-Plug, configure:

Broker host
WebSocket port
TLS / secure connection (WSS)
Username and password (if required)
Base topic or subscription filter
Debug logging (optional)

All credentials are stored using WordPress options and are never exposed to public users unless explicitly enabled.

Usage

Basic shortcode:

[mqtt_plug]

Optional attributes:

height="520px" – set container height
class="custom-class" – add a CSS hook
mode="observer" – server-fed or read-only views (if enabled)

Example:

[mqtt_plug height=”600px” class=”iot-dashboard” mode=”observer”]

Security Notes

Public pages should not use live credentials.
Use observer or server-fed modes for public dashboards.
Always prefer WSS when exposing MQTT over the internet.
Rotate credentials regularly for production systems.

MQTT-Plug does not open inbound ports on WordPress and does not proxy MQTT traffic through the server unless explicitly configured.

License

GPLv2 or later.

Credits

Developed by Michael Winchester
For documentation and updates, visit https://meshplug.michaelwinchester.com/