MCP SERVERBuild an n8n workflow with the node reference, working templates and a validator in the loop — then deploy it to your instance without leaving the chat.
LABSCO SUMMARY
Node validation checks one node against what that node actually requires; workflow validation then checks the graph around it — connections, expressions, AI tool wiring — and returns fixes rather than a verdict. Template search means the starting point is usually somebody's working workflow instead of an empty canvas.
An n8n knowledge, validation and management service. Seven core tools cover the node reference, the template library and validation, and need no n8n instance at all. Sixteen more manage a live instance — creating, updating, deploying, testing and auditing workflows — and switch on once N8N_API_URL and N8N_API_KEY are configured.
search_nodes)get_node)validate_node)validate_workflow)search_templates, get_template)tools_documentation)n8n_create_workflow, n8n_update_partial_workflow, n8n_autofix_workflow, n8n_workflow_versions, n8n_deploy_template)n8n_executions, n8n_test_workflow, n8n_evaluations, n8n_manage_folders, n8n_manage_datatable, n8n_manage_credentials)n8n_audit_instance, n8n_health_check)Nothing for the seven core tools: they take the workflow or the node config as an argument rather than reading it from a running n8n. The hosted service at dashboard.n8n-mcp.com needs only an API key and gives 100 tool calls a day on the free tier; self-hosting is documented for npx, Docker and Railway. The sixteen management tools need N8N_API_URL and N8N_API_KEY pointing at your instance, and an instance behind Cloudflare Access additionally needs N8N_CF_CLIENT_ID and N8N_CF_CLIENT_SECRET. For somewhere that changes should not be made by accident, DISABLED_TOOLS removes whole tools and DISABLED_TOOL_OPERATIONS removes individual destructive operations while keeping the reads.
One command — npx n8n-mcp
USE CASES
Search the template library by task, by the nodes involved, or by how complex it should be, then fetch it as structure or in full. Beginning from a working graph removes most of the ways a first attempt goes wrong.
Read the node at the depth you need, look up the property you are unsure about, and validate the config before it goes anywhere near a run. Defaults are the usual trap, and the validator names them.
Validate the whole graph — connections, expressions and AI tool wiring — and read back the fixes rather than a pass or fail. Then validate it again in the instance once it is there.
Patch it with diff operations instead of replacing the whole JSON. A partial update keeps the rest of the graph untouched, which matters when the workflow is long enough that a full replacement is a risk in itself.
Take a template from n8n.io and deploy it directly, with the auto-fix pass applied on the way in. Then trigger it once and read the execution to see it actually run.
Run the security audit, which combines n8n's own audit API with a deep scan across the workflows, and check connectivity first if anything looks off. Read-only credentials plus the disable lists keep the audit from becoming an edit.
List the write and destructive tools in DISABLED_TOOLS, strip individual operations with DISABLED_TOOL_OPERATIONS, and pair it with a read-only n8n API key. Credential and data-table tools are worth removing outright, because even their reads expose sensitive material.
Counted once with only startup setup. Other versions, modes or optional credentials may expose a different list.
get_nodeGet node info with progressive detail levels and multiple modes. Detail: minimal (~200 tokens), standard (~1-2K, default), full (~3-8K). Modes: info (default), docs (markdown documentation), search_properties (find properties), versions/compare/breaking/migrations (version info). Use format='docs' for readable documentation, mode='search_properties' with propertyQuery for finding specific fields.
get_templateGet template by ID. Use mode to control response size: nodes_only (minimal), structure (nodes+connections), full (complete workflow).
search_nodesSearch n8n nodes by keyword with optional real-world examples. Pass query as string. Example: query="webhook" or query="database". Returns max 20 results. Use includeExamples=true to get top 2 template configs per node.
search_templatesSearch templates with multiple modes. Use searchMode='keyword' for text search, 'by_nodes' to find templates using specific nodes, 'by_task' for curated task-based templates, 'by_metadata' for filtering by complexity/setup time/services, 'patterns' for lightweight workflow pattern summaries mined from 2700+ templates.
tools_documentationGet documentation for n8n MCP tools. Call without parameters for quick start guide. Use topic parameter to get documentation for specific tools. Use depth='full' for comprehensive documentation.
validate_nodeValidate n8n node configuration. Use mode='full' for comprehensive validation with errors/warnings/suggestions, mode='minimal' for quick required fields check. Example: nodeType="nodes-base.slack", config={resource:"channel",operation:"create"}
validate_workflowFull workflow validation: structure, connections, expressions, AI tools. Returns errors/warnings/fixes. Essential before deploy.
BEFORE YOU INSTALL
7 tools when we connected. These are the core tools. Setting N8N_API_URL and N8N_API_KEY adds the management tools, which hold every workflow create, update, delete and deploy action; DISABLED_TOOLS and DISABLED_TOOL_OPERATIONS remove tools for read-only use.
npx on PATH
N8N_API_KEY in your environment
CONTEXT COST
Rated by the size of the 7 tool definitions that ride along on every turn, not by how many there are
INSTALLATION
npx n8n-mcp{
"mcpServers": {
"n8n-mcp": {
"command": "npx",
"args": [
"n8n-mcp"
],
"env": {
"MCP_MODE": "stdio",
"LOG_LEVEL": "error",
"DISABLE_CONSOLE_OUTPUT": "true"
}
}
}
}{
"mcpServers": {
"n8n-mcp": {
"command": "npx",
"args": [
"n8n-mcp"
],
"env": {
"MCP_MODE": "stdio",
"LOG_LEVEL": "error",
"DISABLE_CONSOLE_OUTPUT": "true",
"N8N_API_URL": "<YOUR_N8N_API_URL>",
"N8N_API_KEY": "<YOUR_N8N_API_KEY>"
}
}
}
}claude mcp add n8n-mcp \
-e MCP_MODE=stdio \
-e LOG_LEVEL=error \
-e DISABLE_CONSOLE_OUTPUT=true \
-e N8N_API_URL=<YOUR_N8N_API_URL> \
-e N8N_API_KEY=<YOUR_N8N_API_KEY> \
-- npx n8n-mcpMCP servers
pratapsfdc22-dev
milisp
nikolausm
ninihen1