This workflow follows the HTTP Request → Memory Buffer Window recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"name": "WhatsApp IA com Audio",
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "whatsapp-webhook",
"options": {}
},
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"typeVersion": 1,
"position": [
-860,
400
],
"id": "webhook-whatsapp"
},
{
"parameters": {
"jsCode": "// Extrair dados do webhook incluindo \u00e1udio\nlet message = \"\";\nlet from = \"\";\nlet profileName = \"\";\nlet waId = \"\";\nlet destinatario = \"\";\nlet mediaUrl = \"\";\nlet mediaType = \"\";\n\nconst body = $input.first().json.body || $input.first().json;\n\nif (body.Body) {\n message = body.Body || \"\";\n from = body.From || \"\";\n profileName = body.ProfileName || \"\";\n waId = body.WaId || \"\";\n destinatario = body.To;\n \n // Verificar se \u00e9 \u00e1udio\n if (body.MediaUrl0) {\n mediaUrl = body.MediaUrl0;\n mediaType = body.MediaContentType0 || \"\";\n }\n}\n\nreturn [{\n json: {\n message: message,\n from: from,\n profileName: profileName,\n waId: \"+\" + waId,\n destinatario: destinatario,\n mediaUrl: mediaUrl,\n mediaType: mediaType,\n isAudio: mediaType.includes('audio')\n }\n}];"
},
"name": "Extrair Dados",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
-640,
400
],
"id": "extrair-dados"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"leftValue": "={{$json.isAudio}}",
"rightValue": true,
"operator": {
"type": "boolean",
"operation": "equals"
}
}
]
}
},
"name": "\u00c9 \u00c1udio?",
"type": "n8n-nodes-base.if",
"typeVersion": 2,
"position": [
-420,
400
],
"id": "check-audio"
},
{
"parameters": {
"method": "GET",
"url": "={{$json.mediaUrl}}",
"authentication": "genericCredentialType",
"genericAuthType": "httpBasicAuth",
"options": {
"response": {
"response": {
"responseFormat": "file"
}
}
}
},
"name": "Baixar \u00c1udio",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
-200,
300
],
"id": "download-audio",
"credentials": {
"httpBasicAuth": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"model": "whisper-1",
"options": {}
},
"name": "Transcrever \u00c1udio",
"type": "@n8n/n8n-nodes-langchain.openAiWhisper",
"typeVersion": 1,
"position": [
20,
300
],
"id": "transcribe-audio",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"jsCode": "// Combinar dados do \u00e1udio transcrito\nconst audioData = $input.first().json;\nconst originalData = $node[\"Extrair Dados\"].json;\n\nreturn [{\n json: {\n ...originalData,\n message: audioData.text,\n isTranscribed: true\n }\n}];"
},
"name": "Processar Transcri\u00e7\u00e3o",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
240,
300
],
"id": "process-transcription"
},
{
"parameters": {
"sessionIdType": "customKey",
"sessionKey": "={{ $json.waId}}"
},
"type": "@n8n/n8n-nodes-langchain.memoryBufferWindow",
"typeVersion": 1.3,
"position": [
680,
400
],
"id": "memory",
"name": "Simple Memory"
},
{
"parameters": {
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.chatOpenAi",
"typeVersion": 1,
"position": [
900,
400
],
"id": "chat-openai",
"name": "Message an assistant",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"leftValue": "={{$node[\"Extrair Dados\"].json.isAudio}}",
"rightValue": true,
"operator": {
"type": "boolean",
"operation": "equals"
}
}
]
}
},
"name": "Responder com \u00c1udio?",
"type": "n8n-nodes-base.if",
"typeVersion": 2,
"position": [
1120,
400
],
"id": "check-audio-response"
},
{
"parameters": {
"model": "tts-1",
"input": "={{$node[\"Message an assistant\"].json.output}}",
"voice": "alloy",
"options": {}
},
"name": "Gerar \u00c1udio",
"type": "@n8n/n8n-nodes-langchain.openAiTts",
"typeVersion": 1,
"position": [
1340,
300
],
"id": "generate-audio",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"from": "={{$node[\"Webhook\"].json.body.To.replaceAll('whatsapp:', '')}}",
"to": "={{$node[\"Extrair Dados\"].json.waId}}",
"toWhatsapp": true,
"mediaUrl": "={{$node[\"Gerar \u00c1udio\"].json.url}}",
"options": {}
},
"name": "Enviar \u00c1udio",
"type": "n8n-nodes-base.twilio",
"typeVersion": 1,
"position": [
1560,
300
],
"id": "send-audio",
"credentials": {
"twilioApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"from": "={{$node[\"Webhook\"].json.body.To.replaceAll('whatsapp:', '')}}",
"to": "={{$node[\"Extrair Dados\"].json.waId}}",
"toWhatsapp": true,
"message": "={{$node[\"Message an assistant\"].json.output}}",
"options": {}
},
"name": "Enviar Texto",
"type": "n8n-nodes-base.twilio",
"typeVersion": 1,
"position": [
1560,
500
],
"id": "send-text",
"credentials": {
"twilioApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"method": "POST",
"url": "=http://supabase-server:3001/api/registrar-mensagem",
"sendBody": true,
"bodyParameters": {
"parameters": [
{
"name": "whatsappNumero",
"value": "={{$node[\"Extrair Dados\"].json.from.replace(\"whatsapp:\", \"\")}}"
},
{
"name": "pergunta",
"value": "={{$node[\"Extrair Dados\"].json.message}}"
},
{
"name": "resposta",
"value": "={{$node[\"Message an assistant\"].json.output}}"
},
{
"name": "numeroDestino",
"value": "={{$node[\"Webhook\"].json.body.To.replaceAll('whatsapp:','')}}"
},
{
"name": "nome",
"value": "={{$node[\"Extrair Dados\"].json.profileName}}"
},
{
"name": "tipoMensagem",
"value": "={{$node[\"Extrair Dados\"].json.isAudio ? 'audio' : 'texto'}}"
}
]
}
},
"name": "Registrar Mensagem",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 3,
"position": [
1780,
400
],
"id": "register-message"
}
],
"connections": {
"Webhook": {
"main": [
[
{
"node": "Extrair Dados",
"type": "main",
"index": 0
}
]
]
},
"Extrair Dados": {
"main": [
[
{
"node": "\u00c9 \u00c1udio?",
"type": "main",
"index": 0
}
]
]
},
"\u00c9 \u00c1udio?": {
"main": [
[
{
"node": "Baixar \u00c1udio",
"type": "main",
"index": 0
}
],
[
{
"node": "Simple Memory",
"type": "main",
"index": 0
}
]
]
},
"Baixar \u00c1udio": {
"main": [
[
{
"node": "Transcrever \u00c1udio",
"type": "main",
"index": 0
}
]
]
},
"Transcrever \u00c1udio": {
"main": [
[
{
"node": "Processar Transcri\u00e7\u00e3o",
"type": "main",
"index": 0
}
]
]
},
"Processar Transcri\u00e7\u00e3o": {
"main": [
[
{
"node": "Simple Memory",
"type": "main",
"index": 0
}
]
]
},
"Simple Memory": {
"main": [
[
{
"node": "Message an assistant",
"type": "main",
"index": 0
}
]
]
},
"Message an assistant": {
"main": [
[
{
"node": "Responder com \u00c1udio?",
"type": "main",
"index": 0
}
]
]
},
"Responder com \u00c1udio?": {
"main": [
[
{
"node": "Gerar \u00c1udio",
"type": "main",
"index": 0
}
],
[
{
"node": "Enviar Texto",
"type": "main",
"index": 0
}
]
]
},
"Gerar \u00c1udio": {
"main": [
[
{
"node": "Enviar \u00c1udio",
"type": "main",
"index": 0
}
]
]
},
"Enviar \u00c1udio": {
"main": [
[
{
"node": "Registrar Mensagem",
"type": "main",
"index": 0
}
]
]
},
"Enviar Texto": {
"main": [
[
{
"node": "Registrar Mensagem",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
httpBasicAuthopenAiApitwilioApi
Pro
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About this workflow
WhatsApp IA com Audio. Uses httpRequest, openAiWhisper, memoryBufferWindow, chatOpenAi. Webhook trigger; 13 nodes.
Source: https://github.com/1thays4/painel-clientes-ia-ts/blob/main/workflows/workflow-audio-whatsapp.json — original creator credit. Request a take-down →
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