Fetch Mailchimp Lists via Webhook

The workflow JSON

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{
  "name": "Mailchimp - Get All Lists",
  "nodes": [
    {
      "parameters": {
        "path": "mailchimp-get-lists",
        "options": {}
      },
      "id": "webhook-trigger",
      "name": "Webhook Trigger",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "method": "GET",
        "url": "https://us21.api.mailchimp.com/3.0/lists",
        "authentication": "headerAuth",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorization",
              "value": "Bearer YOUR_MAILCHIMP_API_KEY"
            }
          ]
        },
        "options": {
          "queryParameters": {
            "parameters": [
              {
                "name": "count",
                "value": "100"
              }
            ]
          }
        }
      },
      "id": "get-lists",
      "name": "Get All Lists",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [
        450,
        300
      ]
    },
    {
      "parameters": {
        "jsCode": "// Formatiere Listen f\u00fcr bessere Lesbarkeit\nconst response = $input.item.json;\nconst lists = response.lists || [];\n\n// Erstelle \u00fcbersichtliche Liste\nconst formattedLists = lists.map(list => ({\n  id: list.id,\n  name: list.name,\n  member_count: list.stats?.member_count || 0,\n  created_at: list.date_created || 'N/A',\n  web_id: list.web_id || 'N/A'\n}));\n\nreturn [{\n  json: {\n    total_lists: lists.length,\n    lists: formattedLists,\n    message: 'Verwende die \"id\" als MAILCHIMP_LIST_ID'\n  }\n}];"
      },
      "id": "format-lists",
      "name": "Format Lists",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        650,
        300
      ]
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ $json }}"
      },
      "id": "respond",
      "name": "Respond with Lists",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1,
      "position": [
        850,
        300
      ]
    }
  ],
  "connections": {
    "Webhook Trigger": {
      "main": [
        [
          {
            "node": "Get All Lists",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get All Lists": {
      "main": [
        [
          {
            "node": "Format Lists",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Format Lists": {
      "main": [
        [
          {
            "node": "Respond with Lists",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "staticData": null,
  "tags": [],
  "triggerCount": 1,
  "updatedAt": "2025-12-16T00:00:00.000Z",
  "versionId": "1"
}

About this workflow

Mailchimp - Get All Lists. Uses httpRequest. Webhook trigger; 4 nodes.

Source: https://github.com/Heiko888/Connection-Key-MCP-Server/blob/5fb3234c408ac53857f70f672749a6591ea5af7f/n8n-workflows/mailchimp-get-lists.json — original creator credit. Request a take-down →

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