Detrance - Atendimento Whatsapp RAG

The workflow JSON

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{
  "name": "DetranCE - Atendimento WhatsApp RAG",
  "nodes": [
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "whatsapp-webhook",
        "responseMode": "onReceived"
      },
      "name": "WhatsApp Webhook Trigger",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "url": "https://YOUR_SUPABASE_URL/rest/v1/rpc/search_documents",
        "method": "POST",
        "headerParametersUi": {
          "parameter": [
            {
              "name": "apikey",
              "value": "YOUR_SUPABASE_ANON_KEY"
            },
            {
              "name": "Authorization",
              "value": "Bearer YOUR_SUPABASE_SERVICE_ROLE_KEY"
            },
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "bodyParametersUi": {
          "parameter": [
            {
              "name": "query",
              "value": "={{$json[\"body\"].message}}"
            }
          ]
        }
      },
      "name": "Supabase Semantic Search",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 1,
      "position": [
        450,
        300
      ]
    },
    {
      "parameters": {
        "functionCode": "const docs = $items(\"Supabase Semantic Search\").map(i => i.json);\nconst question = $json[\"body\"].message;\nconst context = docs.map(d => d.content).join('\\n---\\n');\nconst prompt = `Voc\u00ea \u00e9 DetranCE, um atendente digital cordial e educado. Baseie suas respostas exclusivamente no seguinte conte\u00fado:\n${context}\n\nPergunta: ${question}\nResposta:`;\nreturn [{ json: { prompt }}];"
      },
      "name": "Build Prompt for OpenAI",
      "type": "n8n-nodes-base.function",
      "typeVersion": 1,
      "position": [
        650,
        300
      ]
    },
    {
      "parameters": {
        "model": "gpt-4",
        "messages": [
          {
            "role": "user",
            "content": "={{$json[\"prompt\"]}}"
          }
        ],
        "temperature": 0,
        "max_tokens": 500
      },
      "name": "OpenAI Chat Completion",
      "type": "n8n-nodes-base.openAi",
      "typeVersion": 1,
      "position": [
        850,
        300
      ]
    },
    {
      "parameters": {
        "from": "whatsapp:+YOUR_TWILIO_NUMBER",
        "to": "={{$json[\"body\"].from}}",
        "message": "={{$json[\"choices\"][0][\"message\"][\"content\"]}}"
      },
      "name": "Send WhatsApp Reply via Twilio",
      "type": "n8n-nodes-base.twilio",
      "typeVersion": 1,
      "position": [
        1050,
        300
      ]
    },
    {
      "parameters": {
        "note": "Este workflow recebe mensagens via webhook WhatsApp, busca documentos relevantes na base Supabase, gera resposta usando o modelo GPT-4 e envia a resposta pelo Twilio WhatsApp, sempre usando o personagem cordial DetranCE."
      },
      "name": "Sticky Note - Atendimento RAG",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        650,
        180
      ]
    }
  ],
  "connections": {
    "WhatsApp Webhook Trigger": {
      "main": [
        [
          {
            "node": "Supabase Semantic Search",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Supabase Semantic Search": {
      "main": [
        [
          {
            "node": "Build Prompt for OpenAI",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Build Prompt for OpenAI": {
      "main": [
        [
          {
            "node": "OpenAI Chat Completion",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Completion": {
      "main": [
        [
          {
            "node": "Send WhatsApp Reply via Twilio",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {},
  "id": "detrance-atendimento-rag"
}

About this workflow

DetranCE - Atendimento WhatsApp RAG. Uses openAi, httpRequest, twilio. Webhook trigger; 7 nodes.

Source: https://gist.github.com/ruinaldoti/f8c835351b8974668835dcebb6459c6b — original creator credit. Request a take-down →

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