n8n Workflow Architect

I have designed a 4-node workflow that handles the transition from a spreadsheet trigger to binary image upload, including the necessary buffer conversion.

n8n Lead-to-Drive Image Workflow

{
  "nodes": [
    {
      "parameters": {
        "pollTimes": {
          "item": [{"mode": "everyMinute"}]
        },
        "documentId": {"__rl": true, "value": "PASTE_SHEET_ID_HERE", "mode": "id"},
        "sheetName": "Leads",
        "options": {}
      },
      "id": "1",
      "name": "Google Sheets Trigger",
      "type": "n8n-nodes-base.googleSheetsTrigger",
      "typeVersion": 1,
      "position": [250, 300]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://api.openai.com/v1/images/generations",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "sendBody": true,
        "bodyParameters": {
          "parameters": [
            { "name": "model", "value": "dall-e-3" },
            { "name": "prompt", "value": "={{ $json['LeadDescription'] }}" }
          ]
        }
      },
      "id": "2",
      "name": "OpenAI DALL-E",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [450, 300]
    },
    {
      "parameters": {
        "url": "={{ $json['data'][0]['url'] }}",
        "responseFormat": "file",
        "options": {}
      },
      "id": "3",
      "name": "Download Image",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [650, 300]
    },
    {
      "parameters": {
        "fileContent": "={{ $json['data'] }}",
        "fileName": "={{ $node['Google Sheets Trigger'].json['LeadName'] }}.png",
        "parentId": {"__rl": true, "value": "PASTE_FOLDER_ID_HERE", "mode": "id"}
      },
      "id": "4",
      "name": "Google Drive Upload",
      "type": "n8n-nodes-base.googleDrive",
      "typeVersion": 3,
      "position": [850, 300]
    }
  ],
  "connections": {
    "Google Sheets Trigger": { "main": [[{ "node": "OpenAI DALL-E", "type": "main", "index": 0 }]] },
    "OpenAI DALL-E": { "main": [[{ "node": "Download Image", "type": "main", "index": 0 }]] },
    "Download Image": { "main": [[{ "node": "Google Drive Upload", "type": "main", "index": 0 }]] }
  }
}

Next steps
1.

Create Credentials: Set up a Google Sheets OAuth2, OpenAI Header Auth (Authorization: Bearer YOUR_KEY), and Google Drive OAuth2 credential.
2. Replace Placeholders: Update PASTE_SHEET_ID_HERE and PASTE_FOLDER_ID_HERE with your actual resource IDs.
3.

Test Node 3: Ensure the 'Download Image' node correctly outputs a binary object named 'data' before running the final Drive node.