Which integrations are available for this server?

Provides tools for managing Node-RED flows, including getting, creating, updating, enabling, disabling flows, as well as searching and installing modules.

How do I use node-red-mcp?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@node-red-mcp show me my current flows" 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.

node-red-mcp

by ziv-daniel

Overview Schema Related Servers Score Discussions

TypeScript

Hybrid

🚀 MCP Node-RED Server

License: MIT Node.js Version TypeScript CI/CD

A modern, production-ready Model Context Protocol (MCP) server for Node-RED integration.

🌟 Features

🔧 20 MCP Tools

Full CRUD for flows, context variables, modules, and diagnostics — plus semantic search and real-time error detection.

📚 Prompts Library

Built-in prompt templates: debug_flow, explain_automation, audit_security, document_flow.

📦 MCP Resources

Browse Node-RED state as structured resources: nodered://flows, nodered://subflows, nodered://nodes, nodered://context/global, flow://<id>, system://runtime.

🔍 Semantic Search

Embeddings-based search across flows and nodes via semantic_search_flows. Finds by meaning, not just keywords.

🧠 Elicitation

The server asks clarifying questions mid-call when required parameters are missing (MCP SDK 1.24+ elicitation).

🚨 Real-time Error Detection

get_node_errors connects to Node-RED's WebSocket /comms endpoint to detect nodes in error/warning state in real time.

Related MCP server: MCP Server for n8n Integration

📋 Table of Contents

⚡ Quick Start

Prerequisites

Node.js 22+ (LTS recommended)
Yarn 4.x (automatically managed via Corepack)
Docker (optional, for containerized setup)

Native Installation

git clone https://github.com/ziv-daniel/node-red-mcp.git
cd node-red-mcp
yarn install
yarn build

Docker

docker run -e NODERED_URL=http://your-nodered:1880 \
           -e NODERED_USERNAME=admin \
           -e NODERED_PASSWORD=password \
           -p 3000:3000 \
           ghcr.io/ziv-daniel/node-red-mcp:latest

🔧 Available MCP Tools

Flow Management

Tool	Description	Key Parameters
`get_flows`	List flows (summary or full)	`includeDetails?`, `types?`, `limit?`, `offset?`
`get_flow`	Get a specific flow	`flowId`
`create_flow`	Create a new flow	`flowData`, `validate?`
`update_flow`	Update an existing flow	`flowId`, `flowData`, `validate?`
`enable_flow`	Enable a flow	`flowId`
`disable_flow`	Disable a flow	`flowId`
`delete_flow`	Delete a flow (dry-run by default)	`flowId`, `dryRun?`, `confirm?`
`validate_flow`	Validate flow structure	`flowId`
`search_flows`	Search nodes by type/name/property	`type?`, `query?`, `flowId?`
`semantic_search_flows`	Embeddings-based semantic search	`query`, `scope?`, `topK?`, `refresh?`

Context Variables

Tool	Description	Key Parameters
`get_context`	Read global or flow context	`key?`, `scope?`, `flowId?`
`set_context`	Write a context variable	`key`, `value`, `scope?`, `flowId?`
`delete_context`	Delete a context variable	`key`, `scope?`, `flowId?`

Modules

Tool	Description	Key Parameters
`search_modules`	Search Node-RED palette	`query`, `category?`, `limit?`
`install_module`	Install a module	`moduleName`, `version?`
`get_installed_modules`	List installed modules	—

Diagnostics

Tool	Description	Key Parameters
`get_node_errors`	Detect nodes in error/warning state (WebSocket)	`includeWarnings?`, `timeoutMs?`
`get_flow_state`	Get flow runtime state (started/stopped)	—
`get_settings`	Get Node-RED runtime settings	—
`get_runtime_info`	Get Node-RED version and system info	—

📦 MCP Resources

Access Node-RED state as browseable MCP resources:

URI	Description
`nodered://flows`	All tab flows (summary)
`nodered://subflows`	All subflows
`nodered://nodes`	Installed node modules
`nodered://context/global`	Global context variables
`flow://<id>`	Full detail for a specific flow
`system://runtime`	Node-RED runtime info

📚 MCP Prompts

Built-in prompt templates for common tasks:

Prompt	Description
`debug_flow`	Diagnose errors in a specific flow
`explain_automation`	Explain what a flow does in plain language
`audit_security`	Security audit of flow configurations
`document_flow`	Generate documentation for a flow

🔌 Connecting to the Server

Transport Modes

Mode	Env Var	Endpoint	Use Case
Streamable HTTP	`MCP_TRANSPORT=http`	`POST /mcp`	Production, remote agents
Stdio	`MCP_TRANSPORT=stdio`	stdin/stdout	Claude Desktop

Authentication

Set MCP_USERNAME and MCP_PASSWORD for HTTP Basic Auth on the /mcp endpoint.

Claude Desktop (stdio)

{
  "mcpServers": {
    "nodered": {
      "command": "node",
      "args": ["path/to/node-red-mcp/dist/index.mjs"],
      "env": {
        "MCP_TRANSPORT": "stdio",
        "NODERED_URL": "https://your-nodered-instance.com",
        "NODERED_USERNAME": "admin",
        "NODERED_PASSWORD": "password"
      }
    }
  }
}

Claude Code / Remote Agent (HTTP)

claude mcp add node-red \
  --transport streamable-http \
  --url https://<your-server>/mcp \
  --header "Authorization: Basic <base64-credentials>"

⚙️ Environment Variables

Variable	Required	Default	Description
`NODERED_URL`	Yes	—	URL of your Node-RED instance
`NODERED_USERNAME`	No	—	Node-RED admin username
`NODERED_PASSWORD`	No	—	Node-RED admin password
`MCP_TRANSPORT`	No	`http`	`http` or `stdio`
`MCP_USERNAME`	No	—	MCP server auth username
`MCP_PASSWORD`	No	—	MCP server auth password
`HOST`	No	`0.0.0.0`	Bind address
`PORT`	No	`3000`	Listen port
`LOG_LEVEL`	No	`info`	`debug`, `info`, `warn`, `error`
`NODERED_REJECT_UNAUTHORIZED`	No	`true`	Set `false` to allow self-signed TLS
`EMBEDDING_MODEL`	No	`Xenova/all-MiniLM-L6-v2`	Model for semantic search

This server cannot be installed

license - not found

quality - not tested

maintenance

How are these scores calculated?

Maintenance

–Maintainers

–Response time

0dRelease cycle

2Releases (12mo)

Commit activity

Resources

GitHub Repository

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