MQTT MCP Server
Connects to MQTT brokers for smart home automation and IoT device control, allowing discovery of topics, reading sensor values, sending commands, and monitoring real-time events.
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@MQTT MCP Serverturn on the living room lights"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MQTT MCP Server
MCP server that connects AI assistants to MQTT brokers for smart home automation and IoT device control.
What it does:
Discovers MQTT topics and devices on your network
Reads sensor values and device states
Sends commands to control devices
Monitors real-time MQTT events
Use cases:
Control smart home devices through AI assistants
Monitor IoT sensor networks
Automate home automation workflows
Debug MQTT integrations
Quick Navigation
Choose your system:
Linux
Claude Code ⭐ Recommended
macOS
Windows
Linux
Linux • Claude Code
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Claude Code
claude mcp add --transport stdio mqtt \
--env MQTT_HOST=YOUR_BROKER_IP \
--env MQTT_PORT=1883 \
--env MQTT_USERNAME=YOUR_USERNAME \
--env MQTT_PASSWORD=YOUR_PASSWORD \
-- python3 -m mqtt_mcp.serverStep 3: Verify
claude mcp listYou should see: mqtt: python3 -m mqtt_mcp.server - ✓ Connected
Linux • Codex CLI
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Codex
codex mcp add mqtt \
--env MQTT_HOST=YOUR_BROKER_IP \
--env MQTT_PORT=1883 \
--env MQTT_USERNAME=YOUR_USERNAME \
--env MQTT_PASSWORD=YOUR_PASSWORD \
-- python3 -m mqtt_mcp.serverStep 3: Verify
codex mcp listLinux • Cursor
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Cursor
Open Cursor Settings → MCP, or create ~/.cursor/mcp.json (global) or .cursor/mcp.json (project-only):
{
"mcpServers": {
"mqtt": {
"command": "python3",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart Cursor
Linux • Cline
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Cline
In VS Code, click MCP Servers icon → Configure MCP Servers, or edit cline_mcp_settings.json:
{
"mcpServers": {
"mqtt": {
"command": "python3",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart VS Code
Linux • Other Clients
For any MCP client that supports stdio transport:
1. Install the package:
pip install mqtt-mcp-server2. Configure with these values:
Command:
python3Args:
["-m", "mqtt_mcp.server"]Environment variables:
MQTT_HOST- Your broker IP/hostnameMQTT_PORT- Broker port (usually 1883)MQTT_USERNAME- Optional usernameMQTT_PASSWORD- Optional password
macOS
macOS • Claude Code
Step 1: Install the package
pip3 install mqtt-mcp-serverStep 2: Add to Claude Code
claude mcp add --transport stdio mqtt \
--env MQTT_HOST=YOUR_BROKER_IP \
--env MQTT_PORT=1883 \
--env MQTT_USERNAME=YOUR_USERNAME \
--env MQTT_PASSWORD=YOUR_PASSWORD \
-- python3 -m mqtt_mcp.serverStep 3: Verify
claude mcp listYou should see: mqtt: python3 -m mqtt_mcp.server - ✓ Connected
macOS • Codex CLI
Step 1: Install the package
pip3 install mqtt-mcp-serverStep 2: Add to Codex
codex mcp add mqtt \
--env MQTT_HOST=YOUR_BROKER_IP \
--env MQTT_PORT=1883 \
--env MQTT_USERNAME=YOUR_USERNAME \
--env MQTT_PASSWORD=YOUR_PASSWORD \
-- python3 -m mqtt_mcp.serverStep 3: Verify
codex mcp listmacOS • Claude Desktop
Step 1: Install the package
pip3 install mqtt-mcp-serverStep 2: Configure Claude Desktop
Open: ~/Library/Application Support/Claude/claude_desktop_config.json
{
"mcpServers": {
"mqtt": {
"command": "python3",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart Claude Desktop
macOS • Cursor
Step 1: Install the package
pip3 install mqtt-mcp-serverStep 2: Add to Cursor
Open Cursor Settings → MCP, or create ~/.cursor/mcp.json (global) or .cursor/mcp.json (project-only):
{
"mcpServers": {
"mqtt": {
"command": "python3",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart Cursor
macOS • Cline
Step 1: Install the package
pip3 install mqtt-mcp-serverStep 2: Add to Cline
In VS Code, click MCP Servers icon → Configure MCP Servers, or edit cline_mcp_settings.json:
{
"mcpServers": {
"mqtt": {
"command": "python3",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart VS Code
macOS • Other Clients
For any MCP client that supports stdio transport:
1. Install the package:
pip3 install mqtt-mcp-server2. Configure with these values:
Command:
python3Args:
["-m", "mqtt_mcp.server"]Environment variables:
MQTT_HOST- Your broker IP/hostnameMQTT_PORT- Broker port (usually 1883)MQTT_USERNAME- Optional usernameMQTT_PASSWORD- Optional password
Windows
Windows • Claude Code
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Claude Code
claude mcp add --transport stdio mqtt `
--env MQTT_HOST=YOUR_BROKER_IP `
--env MQTT_PORT=1883 `
--env MQTT_USERNAME=YOUR_USERNAME `
--env MQTT_PASSWORD=YOUR_PASSWORD `
-- python -m mqtt_mcp.serverStep 3: Verify
claude mcp listYou should see: mqtt: python -m mqtt_mcp.server - ✓ Connected
Windows • Codex CLI
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Codex
codex mcp add mqtt `
--env MQTT_HOST=YOUR_BROKER_IP `
--env MQTT_PORT=1883 `
--env MQTT_USERNAME=YOUR_USERNAME `
--env MQTT_PASSWORD=YOUR_PASSWORD `
-- python -m mqtt_mcp.serverStep 3: Verify
codex mcp listWindows • Claude Desktop
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Configure Claude Desktop
Open: %APPDATA%\Claude\claude_desktop_config.json
{
"mcpServers": {
"mqtt": {
"command": "python",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart Claude Desktop
Windows • Cursor
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Cursor
Open Cursor Settings → MCP, or create ~/.cursor/mcp.json (global) or .cursor/mcp.json (project-only):
{
"mcpServers": {
"mqtt": {
"command": "python",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart Cursor
Windows • Cline
Step 1: Install the package
pip install mqtt-mcp-serverStep 2: Add to Cline
In VS Code, click MCP Servers icon → Configure MCP Servers, or edit cline_mcp_settings.json:
{
"mcpServers": {
"mqtt": {
"command": "python",
"args": ["-m", "mqtt_mcp.server"],
"env": {
"MQTT_HOST": "YOUR_BROKER_IP",
"MQTT_PORT": "1883",
"MQTT_USERNAME": "YOUR_USERNAME",
"MQTT_PASSWORD": "YOUR_PASSWORD"
}
}
}
}Step 3: Restart VS Code
Windows • Other Clients
For any MCP client that supports stdio transport:
1. Install the package:
pip install mqtt-mcp-server2. Configure with these values:
Command:
python(notpython3)Args:
["-m", "mqtt_mcp.server"]Environment variables:
MQTT_HOST- Your broker IP/hostnameMQTT_PORT- Broker port (usually 1883)MQTT_USERNAME- Optional usernameMQTT_PASSWORD- Optional password
Available Tools
After installation, ask your AI assistant: "What MQTT tools are available?"
You should see 4 tools:
topics
Discover MQTT topics on your broker.
Parameters:
- scan_timeout: Scan duration in seconds (1-60, default: 10)
- keywords: Filter topics by keywords
- limit: Max results (1-200, default: 50)value
Read current values from topics (uses cache for speed).
Parameters:
- topics: List of topic paths (required)
- timeout: Wait time per topic (1-60, default: 5)publish
Send commands to MQTT devices.
Parameters:
- messages: List of {topic, payload, qos, retain}
- timeout: Network timeout (1-30, default: 3)record
Monitor MQTT events in real-time.
Parameters:
- timeout: Recording duration (1-300, default: 30)
- topics: Specific topics to monitor
- keywords: Filter by keywordsTroubleshooting
"python3 not found" (Windows)
Use 'python' instead of 'python3' in all commands"Connection refused"
1. Check MQTT broker is running
2. Verify MQTT_HOST and MQTT_PORT are correct
3. Check firewall settings
4. Test connection: mosquitto_sub -h YOUR_HOST -p 1883 -t "#""Module not found: mqtt_mcp"
Install the package: pip install mqtt-mcp-server
If using venv, make sure it's activatedTools not appearing
1. Restart your AI client
2. Check JSON syntax in config file
3. Verify connection: claude mcp list (or codex mcp list)
4. Check logs (location depends on client)Permission errors (Linux/macOS)
Use pip3 install --user mqtt-mcp-server
Or install in virtual environmentDevelopment
For contributors and developers:
Install from source
# Clone repository
git clone https://github.com/eduard256/mqtt-mcp-server.git
cd mqtt-mcp-server
# Create virtual environment
python3 -m venv venv
source venv/bin/activate # On Windows: venv\Scripts\activate
# Install in development mode
pip install -e .Run tests
# Linux/macOS
python3 tests/test_topics.py
python3 tests/test_value.py
python3 tests/test_publish.py
python3 tests/test_record.py
# Windows
python tests\test_topics.py
python tests\test_value.py
python tests\test_publish.py
python tests\test_record.pyRequirements
Python 3.10+
MQTT broker (Mosquitto, EMQX, HiveMQ, etc.)
Links
PyPI: https://pypi.org/project/mqtt-mcp-server/
GitHub: https://github.com/eduard256/mqtt-mcp-server
Issues: https://github.com/eduard256/mqtt-mcp-server/issues
License
MIT License - See LICENSE for details
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