n8n-mcp-tools-expert

n8n MCP Tools Expert

Master guide for using n8n-mcp MCP server tools to build workflows.

Detailed Guide

Read [the detailed guide](references/detailed-guide.md) before executing this skill. It retains the complete procedure and reference material. Treat its safety, prerequisites, and validation requirements as mandatory. For focused work, load the relevant sections; for end-to-end work, read the guide completely.

When to Use

• You are using the n8n-mcp toolset to discover nodes, validate configs, or manage workflows.
• The task involves choosing the right MCP tool or understanding its expected parameters and usage pattern.
• You need guidance on workflow creation or editing through n8n MCP rather than through the n8n UI alone.

---

Tool Usage Patterns

Pattern 1: Node Discovery (Most Common)

Common workflow: 18s average between steps

// Step 1: Search (fast!)
const results = await search_nodes({
  query: "slack",
  mode: "OR",  // Default: any word matches
  limit: 20
});
// → Returns: nodes-base.slack, nodes-base.slackTrigger

// Step 2: Get details (~18s later, user reviewing results)
const details = await get_node({
  nodeType: "nodes-base.slack",
  includeExamples: true  // Get real template configs
});
// → Returns: operations, properties, metadata

Pattern 2: Validation Loop

Typical cycle: 23s thinking, 58s fixing

// Step 1: Validate
const result = await validate_node({
  nodeType: "nodes-base.slack",
  config: {
    resource: "channel",
    operation: "create"
  },
  profile: "runtime"
});

// Step 2: Check errors (~23s thinking)
if (!result.valid) {
  console.log(result.errors);  // "Missing required field: name"
}

// Step 3: Fix config (~58s fixing)
config.name = "general";

// Step 4: Validate again
await validate_node({...});  // Repeat until clean

Pattern 3: Workflow Editing

Most used update tool: 99.0% success rate, 56s average between edits

// Iterative workflow building (NOT one-shot!)
// Edit 1
await n8n_update_partial_workflow({
  id: "workflow-id",
  intent: "Add webhook trigger",
  operations: [{type: "addNode", node: {...}}]
});

// ~56s later...

// Edit 2
await n8n_update_partial_workflow({
  id: "workflow-id",
  intent: "Connect webhook to processor",
  operations: [{type: "addConnection", source: "...", target: "..."}]
});

// ~56s later...

// Edit 3 (validation)
await n8n_validate_workflow({id: "workflow-id"});

// Ready? Activate!
await n8n_update_partial_workflow({
  id: "workflow-id",
  intent: "Activate workflow for production",
  operations: [{type: "activateWorkflow"}]
});

---

Template Usage

Search Templates

// Search by keyword (default mode)
search_templates({
  query: "webhook slack",
  limit: 20
});

// Search by node types
search_templates({
  searchMode: "by_nodes",
  nodeTypes: ["n8n-nodes-base.httpRequest", "n8n-nodes-base.slack"]
});

// Search by task type
search_templates({
  searchMode: "by_task",
  task: "webhook_processing"
});

// Search by metadata (complexity, setup time)
search_templates({
  searchMode: "by_metadata",
  complexity: "simple",
  maxSetupMinutes: 15
});

Get Template Details

get_template({
  templateId: 2947,
  mode: "structure"  // nodes+connections only
});

get_template({
  templateId: 2947,
  mode: "full"  // complete workflow JSON
});

Deploy Template Directly

// Deploy template to your n8n instance
n8n_deploy_template({
  templateId: 2947,
  name: "My Weather to Slack",  // Custom name (optional)
  autoFix: true,  // Auto-fix common issues (default)
  autoUpgradeVersions: true  // Upgrade node versions (default)
});
// Returns: workflow ID, required credentials, fixes applied

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Limitations

• Use this skill only when the task clearly matches the scope described above.
• Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
• Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.