I Built an AI Lead Scoring Agent That Prioritizes My Inbox While I Sleep (Full n8n Workflow JSON)

New Lead (Webhook/Form)
    → Enrich: pull company data from email domain
    → AI Score: GPT-4o evaluates the lead on 5 criteria
    → Route: Hot → Slack alert + priority tag
           Warm → CRM queue
           Cold → auto-archive
    → Log: Google Sheet with score, reasoning, and timestamp

{
  "name": "AI Lead Scoring Agent",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "lead-score",
        "responseMode": "responseNode",
        "options": {}
      },
      "id": "webhook-trigger",
      "name": "Webhook: New Lead",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [0, 0]
    },
    {
      "parameters": {
        "method": "GET",
        "url": "=https://company.clearbit.com/v2/companies/find?domain={{ $json.body.email.split('@')[1] }}",
        "options": {},
        "headerParameters": {
          "parameters": [
            { "name": "Authorization", "value": "Bearer {{$env.CLEARBIT_API_KEY}}" }
          ]
        }
      },
      "id": "clearbit-enrich",
      "name": "Enrich: Company Data",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.1,
      "position": [220, 0]
    },
    {
      "parameters": {
        "model": "gpt-4o-mini",
        "options": {
          "temperature": 0.3
        },
        "messages": {
          "values": [
            {
              "role": "system",
              "content": "You are a lead scoring assistant for a small business automation consultancy. Score each lead on a 1-100 scale based on these criteria:\n\n1. Company fit (25%): Does the company type/size match SMB automation services?\n2. Budget signals (25%): Any mention of budget, pricing, or investment range?\n3. Urgency (20%): Timeline mentions, deadlines, \"ASAP\" language?\n4. Authority (15%): Is the sender a decision-maker based on title?\n5. Engagement (15%): How specific and detailed is their inquiry?\n\nOutput ONLY valid JSON:\n{\n  \"score\": <number 1-100>,\n  \"tier\": \"<hot|warm|cold>\",\n  \"company_fit\": <1-5>,\n  \"budget_signal\": <1-5>,\n  \"urgency\": <1-5>,\n  \"authority\": <1-5>,\n  \"engagement\": <1-5>,\n  \"reasoning\": \"<2-3 sentence explanation>\",\n  \"suggested_action\": \"<specific next step>\"\n}"
            },
            {
              "role": "user",
              "content": "=Lead data:\nName: {{ $json.body.name }}\nEmail: {{ $json.body.email }}\nCompany: {{ $('Enrich: Company Data').item.json.name || $json.body.company || 'Unknown' }}\nIndustry: {{ $('Enrich: Company Data').item.json.category.industry || 'Unknown' }}\nEmployees: {{ $('Enrich: Company Data').item.json.metrics.employees || 'Unknown' }}\nMessage: {{ $json.body.message }}\nSource: {{ $json.body.source || 'website' }}"
            }
          ]
        }
      },
      "id": "ai-score",
      "name": "AI: Score Lead",
      "type": "n8n-nodes-base.openAi",
      "typeVersion": 1.4,
      "position": [440, 0]
    },
    {
      "parameters": {
        "rules": {
          "values": [
            {
              "operation": "equals",
              "value1": "={{ JSON.parse($json.message.content).tier }}",
              "value2": "hot"
            }
          ]
        }
      },
      "id": "check-hot",
      "name": "Is Hot Lead?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2,
      "position": [660, 0]
    },
    {
      "parameters": {
        "channel": "lead-alerts",
        "text": "=🔥 HOT LEAD (Score: {{ JSON.parse($node['AI: Score Lead'].json.message.content).score }}/100)\n\n*{{ $node['Webhook: New Lead'].json.body.name }}* from *{{ JSON.parse($node['AI: Score Lead'].json.message.content).company_fit >= 4 ? $node['Enrich: Company Data'].json.name : 'Unknown' }}*\nEmail: {{ $node['Webhook: New Lead'].json.body.email }}\nMessage: {{ $node['Webhook: New Lead'].json.body.message }}\n\n*Why hot:* {{ JSON.parse($node['AI: Score Lead'].json.message.content).reasoning }}\n*Suggested action:* {{ JSON.parse($node['AI: Score Lead'].json.message.content).suggested_action }}",
        "otherFields": {}
      },
      "id": "slack-hot",
      "name": "Slack: Hot Lead Alert",
      "type": "n8n-nodes-base.slack",
      "typeVersion": 2.1,
      "position": [880, -100]
    },
    {
      "parameters": {
        "operation": "append",
        "documentId": "={{ $env.GOOGLE_SHEET_ID }}",
        "sheetName": "Leads",
        "columns": {
          "mappingMode": "defineBelow",
          "value": {
            "timestamp": "={{ $now.toISO() }}",
            "name": "={{ $node['Webhook: New Lead'].json.body.name }}",
            "email": "={{ $node['Webhook: New Lead'].json.body.email }}",
            "company": "={{ $node['Enrich: Company Data'].json.name || 'Unknown' }}",
            "score": "={{ JSON.parse($node['AI: Score Lead'].json.message.content).score }}",
            "tier": "={{ JSON.parse($node['AI: Score Lead'].json.message.content).tier }}",
            "reasoning": "={{ JSON.parse($node['AI: Score Lead'].json.message.content).reasoning }}",
            "action": "={{ JSON.parse($node['AI: Score Lead'].json.message.content).suggested_action }}"
          }
        }
      },
      "id": "log-sheet",
      "name": "Log: Google Sheet",
      "type": "n8n-nodes-base.googleSheets",
      "typeVersion": 4.3,
      "position": [880, 100]
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ JSON.stringify({ score: JSON.parse($node['AI: Score Lead'].json.message.content).score, tier: JSON.parse($node['AI: Score Lead'].json.message.content).tier, reasoning: JSON.parse($node['AI: Score Lead'].json.message.content).reasoning }) }}"
      },
      "id": "respond-webhook",
      "name": "Respond: Score Result",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1,
      "position": [1100, 0]
    }
  ],
  "connections": {
    "Webhook: New Lead": {
      "main": [
        [{ "node": "Enrich: Company Data", "type": "main", "index": 0 }]
      ]
    },
    "Enrich: Company Data": {
      "main": [
        [{ "node": "AI: Score Lead", "type": "main", "index": 0 }]
      ]
    },
    "AI: Score Lead": {
      "main": [
        [{ "node": "Is Hot Lead?", "type": "main", "index": 0 }]
      ]
    },
    "Is Hot Lead?": {
      "main": [
        [
          { "node": "Slack: Hot Lead Alert", "type": "main", "index": 0 },
          { "node": "Log: Google Sheet", "type": "main", "index": 0 }
        ],
        [
          { "node": "Log: Google Sheet", "type": "main", "index": 0 }
        ]
      ]
    },
    "Slack: Hot Lead Alert": {
      "main": [
        [{ "node": "Respond: Score Result", "type": "main", "index": 0 }]
      ]
    },
    "Log: Google Sheet": {
      "main": [
        [{ "node": "Respond: Score Result", "type": "main", "index": 0 }]
      ]
    }
  }
}