Whatsapp AI - Message Processor

The workflow JSON

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{
  "name": "WhatsApp AI - Message Processor",
  "active": true,
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "whatsapp-incoming",
        "responseMode": "onReceived",
        "responseCode": 200,
        "responseData": "allEntries"
      },
      "name": "Webhook WhatsApp",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        240,
        300
      ]
    },
    {
      "parameters": {
        "values": {
          "string": [
            {
              "name": "phone_number",
              "value": "={{ $json.entry && $json.entry[0] && $json.entry[0].changes && $json.entry[0].changes[0] && $json.entry[0].changes[0].value && $json.entry[0].changes[0].value.contacts && $json.entry[0].changes[0].value.contacts[0] ? $json.entry[0].changes[0].value.contacts[0].wa_id : 'unknown' }}"
            },
            {
              "name": "message_text",
              "value": "={{ $json.entry && $json.entry[0] && $json.entry[0].changes && $json.entry[0].changes[0] && $json.entry[0].changes[0].value && $json.entry[0].changes[0].value.messages && $json.entry[0].changes[0].value.messages[0] && $json.entry[0].changes[0].value.messages[0].text ? $json.entry[0].changes[0].value.messages[0].text.body : '' }}"
            },
            {
              "name": "message_type",
              "value": "={{ $json.entry && $json.entry[0] && $json.entry[0].changes && $json.entry[0].changes[0] && $json.entry[0].changes[0].value && $json.entry[0].changes[0].value.messages && $json.entry[0].changes[0].value.messages[0] ? $json.entry[0].changes[0].value.messages[0].type : 'unknown' }}"
            },
            {
              "name": "timestamp",
              "value": "={{ new Date().toISOString() }}"
            }
          ]
        }
      },
      "name": "Extract Message Data",
      "type": "n8n-nodes-base.set",
      "typeVersion": 1,
      "position": [
        460,
        300
      ]
    },
    {
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{ $json.message_text }}",
              "operation": "isNotEmpty"
            }
          ]
        }
      },
      "name": "Check Valid Message",
      "type": "n8n-nodes-base.if",
      "typeVersion": 1,
      "position": [
        680,
        300
      ]
    },
    {
      "parameters": {
        "url": "http://host.docker.internal:3000/api/v1/ai/process-message",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Content-Type",
              "value": "application/json"
            },
            {
              "name": "Authorization",
              "value": "Bearer {{ $node['Get Auth Token'].json['token'] }}"
            }
          ]
        },
        "sendBody": true,
        "bodyParameters": {
          "parameters": [
            {
              "name": "phone_number",
              "value": "={{ $json.phone_number }}"
            },
            {
              "name": "message",
              "value": "={{ $json.message_text }}"
            },
            {
              "name": "message_type",
              "value": "={{ $json.message_type }}"
            },
            {
              "name": "source",
              "value": "whatsapp_n8n"
            }
          ]
        }
      },
      "name": "Process with EO Cl\u00ednica AI",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 1,
      "position": [
        900,
        200
      ]
    },
    {
      "parameters": {
        "operation": "executeQuery",
        "query": "INSERT INTO whatsapp_messages (phone_number, message_text, message_type, direction, processed_at, ai_response) VALUES ('{{ $json.phone_number }}', '{{ $json.message_text }}', '{{ $json.message_type }}', 'incoming', NOW(), '{{ $node['Process with EO Cl\u00ednica AI'].json['response'] }}') RETURNING id;"
      },
      "name": "Log Message to DB",
      "type": "n8n-nodes-base.postgres",
      "typeVersion": 1,
      "position": [
        1120,
        300
      ],
      "credentials": {
        "postgres": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "Webhook WhatsApp": {
      "main": [
        [
          {
            "node": "Extract Message Data",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Extract Message Data": {
      "main": [
        [
          {
            "node": "Check Valid Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check Valid Message": {
      "main": [
        [
          {
            "node": "Process with EO Cl\u00ednica AI",
            "type": "main",
            "index": 0
          }
        ],
        []
      ]
    },
    "Process with EO Cl\u00ednica AI": {
      "main": [
        [
          {
            "node": "Log Message to DB",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

Credentials you'll need

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• postgres

About this workflow

WhatsApp AI - Message Processor. Uses httpRequest, postgres. Webhook trigger; 5 nodes.

Source: https://github.com/josivantarcio/jtarcio-clinica/blob/5a32b5aefd7b5b26708a538f33cd13647eac413f/n8n-workflows/workflow1.json — original creator credit. Request a take-down →

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