n8n Error Handler: Slack & Email Alerts

The workflow JSON

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{
  "name": "Error Handler Workflow",
  "nodes": [
    {
      "parameters": {},
      "id": "error-trigger",
      "name": "Error Trigger",
      "type": "n8n-nodes-base.errorTrigger",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "values": {
          "string": [
            {
              "name": "errorMessage",
              "value": "={{$json.execution.error.message}}"
            },
            {
              "name": "errorWorkflow",
              "value": "={{$json.workflow.name}}"
            },
            {
              "name": "errorNode",
              "value": "={{$json.execution.error.node.name}}"
            },
            {
              "name": "errorTime",
              "value": "={{$json.execution.error.time}}"
            },
            {
              "name": "executionId",
              "value": "={{$json.execution.id}}"
            }
          ]
        },
        "options": {}
      },
      "id": "extract-error",
      "name": "Extract Error Info",
      "type": "n8n-nodes-base.set",
      "typeVersion": 3,
      "position": [
        450,
        300
      ]
    },
    {
      "parameters": {
        "content": "## Error Details\n\n**Workflow:** {{$json.errorWorkflow}}\n**Node:** {{$json.errorNode}}\n**Time:** {{$json.errorTime}}\n**Execution ID:** {{$json.executionId}}\n\n### Error Message\n```\n{{$json.errorMessage}}\n```\n\n### Full Error Context\n```json\n{{JSON.stringify($input.item().json, null, 2)}}\n```",
        "options": {}
      },
      "id": "format-message",
      "name": "Format Error Message",
      "type": "n8n-nodes-base.markdown",
      "typeVersion": 1,
      "position": [
        650,
        300
      ]
    },
    {
      "parameters": {
        "resource": "message",
        "operation": "post",
        "text": "=\ud83d\udea8 *Workflow Error Alert*\n\n*Workflow:* `{{$json.errorWorkflow}}`\n*Failed Node:* `{{$json.errorNode}}`\n*Time:* {{$json.errorTime}}\n*Error:* {{$json.errorMessage}}\n\n[View Execution]({{$env.N8N_BASE_URL}}/workflow/{{$json.workflow.id}}/executions/{{$json.executionId}})",
        "additionalFields": {
          "thread_ts": ""
        },
        "options": {}
      },
      "id": "notify-slack",
      "name": "Notify Slack",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2,
      "position": [
        850,
        200
      ],
      "continueOnFail": true
    },
    {
      "parameters": {
        "fromEmail": "${ERROR_FROM_EMAIL}",
        "toEmail": "${ERROR_TO_EMAIL}",
        "subject": "=Workflow Error: {{$json.errorWorkflow}}",
        "text": "={{$('Format Error Message').item.html}}",
        "options": {}
      },
      "id": "notify-email",
      "name": "Notify Email",
      "type": "n8n-nodes-base.emailSend",
      "typeVersion": 2,
      "position": [
        850,
        400
      ]
    }
  ],
  "connections": {
    "Error Trigger": {
      "main": [
        [
          {
            "node": "Extract Error Info",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract Error Info": {
      "main": [
        [
          {
            "node": "Format Error Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format Error Message": {
      "main": [
        [
          {
            "node": "Notify Slack",
            "type": "main",
            "index": 0
          },
          {
            "node": "Notify Email",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1",
    "saveManualExecutions": true,
    "callerPolicy": "any"
  },
  "staticData": null,
  "tags": [
    "error-handling",
    "monitoring"
  ],
  "triggerCount": 1,
  "updatedAt": "2024-01-01T00:00:00.000Z",
  "versionId": null
}

About this workflow

Error Handler Workflow. Uses errorTrigger, slack, emailSend. Event-driven trigger; 5 nodes.

Source: https://github.com/pvdyck/n8n-tdd-framework/blob/1417ba0de755ef06ca873baee44b2192f5c42c5c/templates/error-handler.json — original creator credit. Request a take-down →

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