mcp-n8n
MCP server for n8n workflow automation, enabling management of workflows, executions, credentials, tags, users, and webhooks via an MCP-compatible client.
README
mcp-n8n
n8n workflow automation API as a Python library, LangChain tools, and MCP server. Manage workflows, executions, credentials, tags, users, and webhooks from code or an MCP-compatible client.
Features
25 tools across 5 categories:
- Workflows (10) -- list, get, create, update, delete, activate, deactivate, execute, list active, get activation errors
- Executions (5) -- list, get, delete, retry, stop
- Credentials (4) -- list, get schema, create, delete
- Tags (3) -- list, create, delete
- Misc (3) -- list users, trigger webhook, check status
Installation
# Core library only
pip install .
# With MCP server
pip install ".[mcp]"
# With LangChain tools
pip install ".[langchain]"
# Everything
pip install ".[all]"
Configuration
| Variable | Description | Default |
|---|---|---|
N8N_API_KEY |
n8n API key | (required) |
N8N_HOST |
n8n host and port | localhost:5678 |
N8N_PROTOCOL |
Protocol (http or https) | http |
N8N_BASE_URL |
Full base URL (overrides protocol + host) | (computed) |
Create a .env file:
N8N_API_KEY=your-n8n-api-key
N8N_HOST=localhost:5678
N8N_PROTOCOL=http
Quick Start
MCP Server
mcp-n8n
LangChain Tools
from mcp_n8n.langchain_tools import TOOLS, n8n_list_workflows
# Use individual tools
result = n8n_list_workflows.invoke({})
# Or pass all tools to an agent
from langchain.agents import AgentExecutor
agent = AgentExecutor(tools=TOOLS, ...)
Python Library
from mcp_n8n.client import N8nClient
client = N8nClient()
workflows = client.get_sync("/workflows")
License
MIT
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