Slack Webhook Notifier

The workflow JSON

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{
  "name": "Slack Notifier",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "slack-notify",
        "responseMode": "responseNode",
        "options": {}
      },
      "id": "webhook-slack-notify",
      "name": "Slack Webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "jsCode": "// Validate incoming request\nconst input = $input.first().json.body;\n\nif (!input.channel || !input.text) {\n  throw new Error('Missing required fields: channel and text');\n}\n\nreturn [{\n  json: {\n    channel: input.channel,\n    text: input.text,\n    validated: true\n  }\n}];"
      },
      "id": "validate-input",
      "name": "Validate Input",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        450,
        300
      ]
    },
    {
      "parameters": {
        "channel": "={{ $json.channel }}",
        "text": "={{ $json.text }}",
        "options": {}
      },
      "id": "slack-send",
      "name": "Send Slack Message",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2,
      "position": [
        650,
        300
      ]
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={\n  \"success\": true,\n  \"message\": \"Slack notification sent\",\n  \"channel\": \"{{ $json.channel }}\",\n  \"timestamp\": \"{{ $now }}\"\n}",
        "statusCode": 200
      },
      "id": "respond-success",
      "name": "Success Response",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1,
      "position": [
        850,
        300
      ]
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={\n  \"success\": false,\n  \"message\": \"{{ $json.message || 'Unknown error' }}\",\n  \"timestamp\": \"{{ $now }}\"\n}",
        "statusCode": 400
      },
      "id": "respond-error",
      "name": "Error Response",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1,
      "position": [
        850,
        500
      ]
    }
  ],
  "settings": {
    "executionOrder": "v1",
    "saveDataErrorExecution": "all",
    "saveDataSuccessExecution": "all",
    "saveExecutionProgress": true,
    "timezone": "America/Chicago"
  },
  "connections": {
    "Slack Webhook": {
      "main": [
        [
          {
            "node": "Validate Input",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Validate Input": {
      "main": [
        [
          {
            "node": "Send Slack Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Send Slack Message": {
      "main": [
        [
          {
            "node": "Success Response",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "tags": [
    {
      "name": "notification",
      "id": "tag-notification-001"
    },
    {
      "name": "slack",
      "id": "tag-slack-001"
    }
  ]
}

About this workflow

Slack Notifier. Uses slack. Webhook trigger; 5 nodes.

Source: https://github.com/WembassyCo/slack-notifier/blob/30053c8e31170e736a6f69a334fd7d8d2a64f83c/workflows/slack-notify.json — original creator credit. Request a take-down →

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