{
  "name": "Webhook → Validate → Google Sheets",
  "nodes": [
    {
      "parameters": {
        "content": "## Webhook → Validate → Sheets\n\nThe form-and-lead-capture pattern, with the validation step most versions leave out.\n\n**Before you test:** the Webhook node has two URLs. The **test** URL only listens for about 120 seconds after you click *Execute workflow*. The **production** URL works only once the workflow is published. Registering the test URL somewhere external is the single most common reason a webhook \"stops working after two minutes\".",
        "height": 320,
        "width": 400,
        "color": 4
      },
      "id": "sticky-intro",
      "name": "Read me first",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [-180, -40]
    },
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "lead-capture",
        "responseMode": "responseNode",
        "options": {}
      },
      "id": "webhook",
      "name": "Webhook",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [280, 200]
    },
    {
      "parameters": {
        "jsCode": "// Normalise first, validate second. Most \"bad\" submissions are just untrimmed\n// or differently-cased, and rejecting those loses real leads.\nconst out = [];\n\nfor (const item of $input.all()) {\n  const body = item.json.body ?? item.json;\n\n  const email = String(body.email ?? '').trim().toLowerCase();\n  const name = String(body.name ?? '').trim();\n  const message = String(body.message ?? '').trim();\n\n  const errors = [];\n  // Deliberately permissive: something@something.something.\n  if (!/^[^@\\s]+@[^@\\s]+\\.[^@\\s]+$/.test(email)) errors.push('invalid email');\n  if (name.length === 0) errors.push('missing name');\n  if (message.length > 5000) errors.push('message too long');\n\n  out.push({\n    json: {\n      valid: errors.length === 0,\n      errors,\n      receivedAt: new Date().toISOString(),\n      email,\n      name,\n      message,\n      source: body.source ?? 'unknown',\n    },\n  });\n}\n\nreturn out;"
      },
      "id": "validate",
      "name": "Normalise & Validate",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [500, 200]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "is-valid",
              "leftValue": "={{ $json.valid }}",
              "rightValue": "",
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "if-valid",
      "name": "Valid?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [720, 200]
    },
    {
      "parameters": {
        "operation": "append",
        "documentId": {
          "__rl": true,
          "value": "YOUR_SHEET_ID",
          "mode": "id"
        },
        "sheetName": {
          "__rl": true,
          "value": "leads",
          "mode": "name"
        },
        "columns": {
          "mappingMode": "autoMapInputData",
          "value": {},
          "matchingColumns": [],
          "schema": []
        },
        "options": {}
      },
      "id": "append-row",
      "name": "Append Lead",
      "type": "n8n-nodes-base.googleSheets",
      "typeVersion": 4.5,
      "position": [960, 100],
      "notesInFlow": true,
      "notes": "Header row must match the field names"
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ { \"ok\": true } }}",
        "options": {}
      },
      "id": "respond-ok",
      "name": "Respond 200",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [1180, 100]
    },
    {
      "parameters": {
        "operation": "append",
        "documentId": {
          "__rl": true,
          "value": "YOUR_SHEET_ID",
          "mode": "id"
        },
        "sheetName": {
          "__rl": true,
          "value": "rejected",
          "mode": "name"
        },
        "columns": {
          "mappingMode": "autoMapInputData",
          "value": {},
          "matchingColumns": [],
          "schema": []
        },
        "options": {}
      },
      "id": "log-rejected",
      "name": "Log Rejected",
      "type": "n8n-nodes-base.googleSheets",
      "typeVersion": 4.5,
      "position": [960, 320],
      "notesInFlow": true,
      "notes": "Keep rejects — silent discards hide real bugs"
    },
    {
      "parameters": {
        "respondWith": "json",
        "responseBody": "={{ { \"ok\": false, \"errors\": $json.errors } }}",
        "options": {
          "responseCode": 400
        }
      },
      "id": "respond-bad",
      "name": "Respond 400",
      "type": "n8n-nodes-base.respondToWebhook",
      "typeVersion": 1.1,
      "position": [1180, 320]
    },
    {
      "parameters": {
        "content": "### Why log the rejects\n\nA validation branch that discards bad input silently is indistinguishable from a broken form. Writing rejects to their own tab costs nothing and tells you whether your validation is too strict — which it usually is at first.",
        "height": 220,
        "width": 320,
        "color": 6
      },
      "id": "sticky-rejects",
      "name": "Rejects note",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [960, 480]
    }
  ],
  "connections": {
    "Webhook": {
      "main": [
        [
          {
            "node": "Normalise & Validate",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Normalise & Validate": {
      "main": [
        [
          {
            "node": "Valid?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Valid?": {
      "main": [
        [
          {
            "node": "Append Lead",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Log Rejected",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Append Lead": {
      "main": [
        [
          {
            "node": "Respond 200",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Log Rejected": {
      "main": [
        [
          {
            "node": "Respond 400",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "pinData": {},
  "meta": {
    "templateCredsSetupCompleted": false
  }
}