n8n OpenClaw Bridge — Automate Everything#

Connect your OpenClaw agent to n8n for powerful workflow automation. This skill teaches your agent how to create, trigger, manage, and monitor n8n workflows — turning your AI assistant into a full automation operator.

When to Use#

Use this skill when:

• You want your OpenClaw agent to trigger n8n workflows (send data, kick off automations)
• You need to create n8n workflows from natural language descriptions
• You want your agent to monitor workflow execution and handle errors
• You're building AI-in-the-loop automations (agent decides → n8n executes)
• You want to manage your n8n instance without opening the UI

Triggers: "create a workflow", "trigger automation", "n8n workflow", "automate this process", "set up a webhook", "monitor my workflows", "workflow failed"

Prerequisites#

• n8n instance running (local Docker or cloud)
• n8n API key (Settings → API → Create API Key)
• Agent needs the API URL and key stored in environment or TOOLS.md

Quick Setup#

Add to your agent's TOOLS.md:

markdown

## n8n
- **URL:** http://localhost:5678 (or your n8n cloud URL)
- **API Key:** [your-api-key]
- **Version:** 2.x+

Or set environment variables:

bash

export N8N_API_URL="http://localhost:5678"
export N8N_API_KEY="your-api-key-here"

Capabilities#

1. Workflow Management#

List Workflows

bash

curl -s -H "X-N8N-API-KEY: $N8N_API_KEY" "$N8N_API_URL/api/v1/workflows" | jq '.data[] | {id, name, active}'

Get Workflow Details

bash

curl -s -H "X-N8N-API-KEY: $N8N_API_KEY" "$N8N_API_URL/api/v1/workflows/{id}" | jq '.'

Activate/Deactivate Workflow

bash

# Activate
curl -s -X PATCH -H "X-N8N-API-KEY: $N8N_API_KEY" -H "Content-Type: application/json" \
  -d '{"active": true}' "$N8N_API_URL/api/v1/workflows/{id}"

# Deactivate
curl -s -X PATCH -H "X-N8N-API-KEY: $N8N_API_KEY" -H "Content-Type: application/json" \
  -d '{"active": false}' "$N8N_API_URL/api/v1/workflows/{id}"

Delete Workflow

bash

curl -s -X DELETE -H "X-N8N-API-KEY: $N8N_API_KEY" "$N8N_API_URL/api/v1/workflows/{id}"

2. Trigger Workflows via Webhook#

The most common pattern: your agent triggers an n8n workflow by sending data to a webhook.

Create a Webhook-Triggered Workflow

When the user says "automate X", build a workflow with a Webhook trigger node:

json

{
  "name": "Agent-Triggered: [Description]",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "agent-trigger-[unique-id]",
        "responseMode": "lastNode",
        "options": {}
      },
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [250, 300],
      "id": "webhook-node",
      "name": "Agent Webhook"
    }
  ],
  "connections": {},
  "settings": {
    "executionOrder": "v1"
  }
}

Trigger the Webhook

bash

curl -s -X POST "$N8N_API_URL/webhook/agent-trigger-[unique-id]" \
  -H "Content-Type: application/json" \
  -d '{"message": "Hello from OpenClaw", "data": {...}}'

3. Execution Monitoring#

List Recent Executions

bash

curl -s -H "X-N8N-API-KEY: $N8N_API_KEY" \
  "$N8N_API_URL/api/v1/executions?limit=10&status=error" | jq '.data[] | {id, workflowId, status, startedAt}'

Get Execution Details (for debugging)

bash

curl -s -H "X-N8N-API-KEY: $N8N_API_KEY" \
  "$N8N_API_URL/api/v1/executions/{id}" | jq '.'

Retry Failed Execution

bash

curl -s -X POST -H "X-N8N-API-KEY: $N8N_API_KEY" \
  "$N8N_API_URL/api/v1/executions/{id}/retry"

4. Create Workflows from Natural Language#

When the user describes an automation, translate it to an n8n workflow. Follow these patterns:

Pattern: Webhook → Process → Notify

Use for: "When X happens, do Y, then tell me"

text

Webhook Trigger → [Processing Nodes] → Telegram/Slack/Email

Pattern: Schedule → Collect → Report

Use for: "Every morning, check X and send me a summary"

text

Schedule Trigger → HTTP Request(s) → Function (aggregate) → Message

Pattern: Webhook → AI → Action

Use for: "When I send data, have AI analyze it and take action"

text

Webhook → OpenAI/Anthropic Node → IF Node → [Action Branches]

Pattern: Monitor → Alert

Use for: "Watch for errors/changes and alert me"

text

Schedule (every 5min) → HTTP Request → IF (changed?) → Alert

5. Common Workflow Templates#

Lead Notification Pipeline

Agent finds a lead → triggers n8n → n8n sends to CRM + sends notification

bash

# Agent triggers this when it qualifies a lead
curl -s -X POST "$N8N_API_URL/webhook/new-lead" \
  -H "Content-Type: application/json" \
  -d '{
    "business_name": "Willis Plumbing",
    "contact": "John Willis",
    "email": "john@willisplumbing.com",
    "score": 85,
    "source": "google_maps",
    "notes": "4.2 stars, 180 reviews, no website optimization"
  }'

Content Publishing Pipeline

Agent writes content → triggers n8n → n8n posts to multiple platforms

bash

# Agent triggers this when content is approved
curl -s -X POST "$N8N_API_URL/webhook/publish-content" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "5 Ways AI Helps Local Businesses",
    "body": "...",
    "platforms": ["linkedin", "twitter", "blog"],
    "schedule": "2026-03-23T09:00:00Z"
  }'

Website Monitor

n8n checks competitor sites on schedule, sends changes to agent via webhook

Email Digest

n8n collects emails/notifications → sends daily summary to agent's channel

6. Building Workflows Programmatically#

Create a Complete Workflow via API

bash

curl -s -X POST -H "X-N8N-API-KEY: $N8N_API_KEY" \
  -H "Content-Type: application/json" \
  "$N8N_API_URL/api/v1/workflows" \
  -d @workflow.json

Workflow JSON Structure

Every n8n workflow follows this structure:

json

{
  "name": "Workflow Name",
  "nodes": [
    {
      "parameters": {},
      "type": "n8n-nodes-base.nodeName",
      "typeVersion": 1,
      "position": [x, y],
      "id": "unique-id",
      "name": "Display Name"
    }
  ],
  "connections": {
    "Source Node Name": {
      "main": [
        [
          {
            "node": "Target Node Name",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  }
}

Critical rules for valid workflows:

• Every workflow needs at least one trigger node
• connections reference nodes by their name field (not id)
• Node positions should be spaced ~200px apart horizontally
• Use typeVersion 2 for Webhook nodes (v2 supports response modes)
• Always set executionOrder: "v1" in settings

7. Credential Management#

List Available Credentials

bash

curl -s -H "X-N8N-API-KEY: $N8N_API_KEY" \
  "$N8N_API_URL/api/v1/credentials" | jq '.data[] | {id, name, type}'

Note: You can list and reference credentials by ID, but you cannot read credential secrets via the API (security). To use a credential in a workflow node, reference it by ID:

json

{
  "parameters": {...},
  "credentials": {
    "telegramApi": {
      "id": "1",
      "name": "Telegram Bot"
    }
  }
}

Agent Integration Patterns#

The Dispatch Pattern (Recommended)#

Your OpenClaw agent acts as the brain. n8n acts as the hands.

text

User Request → Agent (understands intent, plans) → Triggers n8n Webhook → n8n Executes
                                                                              ↓
User ← Agent (formats response) ← Webhook Callback ← n8n Returns Result

How to implement:

1. Create n8n workflows with webhook triggers for each automation
2. Store webhook URLs in TOOLS.md
3. Agent decides WHEN to trigger based on context
4. n8n handles the HOW (API calls, data transforms, multi-step processes)

The Monitor Pattern#

n8n runs scheduled checks. When something interesting happens, it notifies the agent.

text

n8n (scheduled) → Checks data source → Changed? → Sends to Agent webhook/channel
                                          ↓
                                     Agent processes notification, decides next action

The Approval Pattern#

Agent needs human approval before n8n executes an action.

text

Agent → Asks user for approval (Telegram/Discord) → User approves
  ↓
Agent triggers n8n webhook with approved payload → n8n executes

Error Handling#

When a workflow execution fails:

1. Check execution status — List recent failed executions
2. Read error details — Get the specific execution to see which node failed and why
3. Common fixes:
   • Authentication expired → Re-authenticate the credential in n8n UI
   • Rate limited → Add a Wait node before the failing node
   • Data format wrong → Add a Function node to transform data before the failing node
   • Webhook timeout → Increase timeout or use async response mode
4. Retry — Use the retry API endpoint
5. Alert user — If the workflow is critical and keeps failing

Best Practices#

1. Name workflows clearly — Prefix with "Agent:" so you know which ones the agent manages
2. Use test webhooks first — n8n provides test webhook URLs; use those during development
3. Store webhook URLs in TOOLS.md — The agent needs to know where to send data
4. Add error handling nodes — Every workflow should have an Error Trigger node that notifies the agent
5. Log executions — Keep execution history enabled for debugging
6. One workflow per automation — Don't create mega-workflows; keep them focused
7. Use environment variables — Store API keys in n8n's environment, not in workflow nodes
8. Version your workflows — Export important workflows as JSON backups

Troubleshooting#

IssueSolutionWebhook not respondingCheck workflow is activated ( active: true)401 on API callsVerify API key is correct and has required scopesWorkflow creates but won't activateCheck for validation errors in nodesExecution succeeds but no outputCheck response mode on webhook (should be lastNode)Can't find credential IDList credentials via API, match by nameConnection refusedVerify n8n URL is accessible (Docker networking, firewall)

Quick Reference#

bash

# Health check
curl -s "$N8N_API_URL/healthz"

# List all workflows
curl -s -H "X-N8N-API-KEY: $KEY" "$N8N_API_URL/api/v1/workflows" | jq '.data[] | .name'

# Trigger webhook
curl -s -X POST "$N8N_API_URL/webhook/[path]" -H "Content-Type: application/json" -d '{...}'

# Check failed executions
curl -s -H "X-N8N-API-KEY: $KEY" "$N8N_API_URL/api/v1/executions?status=error&limit=5"

# Create workflow from file
curl -s -X POST -H "X-N8N-API-KEY: $KEY" -H "Content-Type: application/json" "$N8N_API_URL/api/v1/workflows" -d @workflow.json

---

Built by Max | Part of the OpenClaw Setup Service ecosystem | https://marlowne12.github.io/openclaw-setup-service/