About this recipe
A recipe for Ai Voice Chat Using Webhook, Memory Manager, Openai, Google Gemini & Elevenlabs
Recipe Template
{
"id": "TtoDcjgthgA4NTkU",
"meta": {
"instanceId": "fb261afc5089eae952e09babdadd9983000b3d863639802f6ded8c5be2e40067",
"templateCredsSetupCompleted": true
},
"name": "AI Voice Chat using Webhook, Memory Manager, OpenAI, Google Gemini & ElevenLabs",
"tags": [
{
"id": "mqOrNvCDgQLzPA2x",
"name": "Workflows",
"createdAt": "2024-08-07T14:18:53.614Z",
"updatedAt": "2024-08-07T14:18:53.614Z"
}
],
"nodes": [
{
"id": "86cbf150-df4f-42f7-b7b3-e03c32e6f23c",
"name": "Get Chat",
"type": "@n8n\/n8n-nodes-langchain.memoryManager",
"position": [
1700,
-400
],
"parameters": {
"options": []
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "a9153a24-e902-4f29-9b83-447317ce3119",
"name": "Insert Chat",
"type": "@n8n\/n8n-nodes-langchain.memoryManager",
"position": [
2540,
-400
],
"parameters": {
"mode": "insert",
"messages": {
"messageValues": [
{
"type": "user",
"message": "={{ $('OpenAI - Speech to Text').item.json[\"text\"] }}"
},
{
"type": "ai",
"message": "={{ $json.text }}"
}
]
}
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "f5c272d4-248b-45a5-87b5-eb659a865d05",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
1664,
-491
],
"parameters": {
"color": 6,
"width": 486.4746124819703,
"height": 238.4911357933579,
"content": "## Get Context"
},
"typeVersion": 1
},
{
"id": "32ad17ca-0045-487d-9387-71c2e73629d4",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
2510,
-489
],
"parameters": {
"color": 6,
"width": 321.2536584847704,
"height": 231.05945912581728,
"content": "## Save Context"
},
"typeVersion": 1
},
{
"id": "17ae4f1a-6192-4c52-8157-3cb47b37e0fb",
"name": "Aggregate",
"type": "n8n-nodes-base.aggregate",
"position": [
2020,
-400
],
"parameters": {
"options": [],
"aggregate": "aggregateAllItemData",
"destinationFieldName": "context"
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "00b3081e-fbcd-489b-b45a-4e847c346594",
"name": "Window Buffer Memory",
"type": "@n8n\/n8n-nodes-langchain.memoryBufferWindow",
"position": [
2080,
-100
],
"parameters": {
"sessionKey": "test-0dacb3b5-4bcd-47dd-8456-dcfd8c258204",
"sessionIdType": "customKey"
},
"typeVersion": 1.2
},
{
"id": "55ca2790-e905-414a-a9f6-7d88a9e5807d",
"name": "Google Gemini Chat Model",
"type": "@n8n\/n8n-nodes-langchain.lmChatGoogleGemini",
"position": [
2220,
-100
],
"parameters": {
"options": [],
"modelName": "models\/gemini-1.5-flash"
},
"credentials": {
"googlePalmApi": {
"id": "2bUF1ZI9hoMIM5XN",
"name": "Google Gemini(PaLM) Api account"
}
},
"typeVersion": 1
},
{
"id": "e8b3433f-b205-404c-9f05-504556d6b6dd",
"name": "Respond to Webhook",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
3560,
-400
],
"parameters": {
"options": [],
"respondWith": "binary"
},
"typeVersion": 1.1
},
{
"id": "de296743-5ac7-454b-bf3a-d020cc024511",
"name": "ElevenLabs - Generate Audio",
"type": "n8n-nodes-base.httpRequest",
"position": [
3240,
-400
],
"parameters": {
"url": "=https:\/\/api.elevenlabs.io\/v1\/text-to-speech\/{{voice id}}",
"method": "POST",
"options": [],
"sendBody": true,
"sendHeaders": true,
"authentication": "genericCredentialType",
"bodyParameters": {
"parameters": [
{
"name": "text",
"value": "={{ $('Basic LLM Chain').item.json.text }}"
}
]
},
"genericAuthType": "httpCustomAuth",
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application\/json"
}
]
}
},
"credentials": {
"httpCustomAuth": {
"id": "lnGfV4BlxSE6Xc4X",
"name": "Eleven Labs"
}
},
"typeVersion": 4.2
},
{
"id": "214e15f2-8a16-4598-b4ac-9fc2ec6545e6",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
3040,
-560
],
"parameters": {
"width": 468.73250812192407,
"height": 843.7602354099661,
"content": "* ### For the Text-to-Speech part, we'll use ElevenLabs.io, which is free and offers a variety of voices to choose from. However, you can also use the OpenAI `\"Generate audio\"` node instead.\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n* ### Since there is no pre-built node for `\"ElevenLabs\"` in n8n, we'll connect to it through its API using the \"HTTP Request\" node.\n\n## Prerequisites:\n* ### `\"ElevenLabs API Key\"` (you can obtain it from their website).\n* ### `\"Voice ID\"` (you can also get it from ElevenLabs' \"Voice Library\").\n## Setup\n* ### In the URL parameter, replace \"{{voice id}}\" at the end of the URL with the Voice ID you obtained from ElevenLabs.io.\n* ### To set up your API Key, add custom authentication and include the following `JSON` with your acual ElevenLabs API Key:\n```json\n{\n \"headers\": {\n \"xi-api-key\": \"put-your-API-Key-here\"\n }\n}\n```"
},
"typeVersion": 1
},
{
"id": "94ad934c-4a13-47b1-83a5-76fab43b3a47",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
1663,
-598
],
"parameters": {
"color": 6,
"width": 487.4293487597613,
"height": 91.01435855269375,
"content": "### The \"Get Chat,\" \"Insert Chat,\" and \"Window Buffer Memory\" nodes will help the LLM model maintain context throughout the conversation."
},
"typeVersion": 1
},
{
"id": "0a96f48d-0d8b-4240-9eab-a681bfd4c8b5",
"name": "Limit",
"type": "n8n-nodes-base.limit",
"position": [
2900,
-400
],
"parameters": [],
"typeVersion": 1
},
{
"id": "9a5d4ddb-6403-4758-858e-9fbe10c421a9",
"name": "Basic LLM Chain",
"type": "@n8n\/n8n-nodes-langchain.chainLlm",
"position": [
2200,
-400
],
"parameters": {
"text": "={{ $('OpenAI - Speech to Text').item.json[\"text\"] }}",
"messages": {
"messageValues": [
{
"type": "AIMessagePromptTemplate",
"message": "=To maintain context and fully understand the user's question, always review the previous conversation between you and him before providing an answer.\nThis is the previous conversation:\n{{ $('Aggregate').item.json[\"context\"].map(m => `\nHuman: ${m.human || 'undefined'}\nAI Assistant: ${m.ai || 'undefined'}\n`).join('') }}"
}
]
},
"promptType": "define"
},
"typeVersion": 1.4
},
{
"id": "f2f99895-9678-41b8-ad28-db40e1e23dc0",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
1320,
-400
],
"webhookId": "e9f611eb-a8dd-4520-8d24-9f36deaca528",
"parameters": {
"path": "voice_message",
"options": [],
"httpMethod": "POST",
"responseMode": "responseNode"
},
"typeVersion": 2
},
{
"id": "d9a5fb04-4c02-4da4-b690-7b0ecd0ae052",
"name": "OpenAI - Speech to Text",
"type": "@n8n\/n8n-nodes-langchain.openAi",
"position": [
1500,
-400
],
"parameters": {
"options": [],
"resource": "audio",
"operation": "transcribe",
"binaryPropertyName": "voice_message"
},
"credentials": {
"openAiApi": {
"id": "2Cije3KX7OIVwn9B",
"name": "n8n OpenAI"
}
},
"typeVersion": 1.3
}
],
"active": true,
"pinData": [],
"settings": {
"callerPolicy": "workflowsFromSameOwner",
"executionOrder": "v1",
"saveManualExecutions": true
},
"versionId": "fe5792ca-03d7-4cdd-96db-20f4cd479c7e",
"connections": {
"Limit": {
"main": [
[
{
"node": "ElevenLabs - Generate Audio",
"type": "main",
"index": 0
}
]
]
},
"Webhook": {
"main": [
[
{
"node": "OpenAI - Speech to Text",
"type": "main",
"index": 0
}
]
]
},
"Get Chat": {
"main": [
[
{
"node": "Aggregate",
"type": "main",
"index": 0
}
]
]
},
"Aggregate": {
"main": [
[
{
"node": "Basic LLM Chain",
"type": "main",
"index": 0
}
]
]
},
"Insert Chat": {
"main": [
[
{
"node": "Limit",
"type": "main",
"index": 0
}
]
]
},
"Basic LLM Chain": {
"main": [
[
{
"node": "Insert Chat",
"type": "main",
"index": 0
}
]
]
},
"Window Buffer Memory": {
"ai_memory": [
[
{
"node": "Insert Chat",
"type": "ai_memory",
"index": 0
},
{
"node": "Get Chat",
"type": "ai_memory",
"index": 0
}
]
]
},
"OpenAI - Speech to Text": {
"main": [
[
{
"node": "Get Chat",
"type": "main",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "Basic LLM Chain",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"ElevenLabs - Generate Audio": {
"main": [
[
{
"node": "Respond to Webhook",
"type": "main",
"index": 0
}
]
]
}
}
}How to Use an n8n Template
1
Create a New Workflow
Click "New Workflow" in your n8n dashboard to get started.
2
Copy & Paste Template
First, copy this template:
Click here to copy the JSON
.
Then, in n8n, click the three dots (···) → "Import from file" and paste the JSON code.
3
Customize the Nodes
Go through each node in the workflow to update inputs like spreadsheet IDs, email addresses, or message content. Adjust field mappings to match your data.
4
Grant Access
For nodes that connect to external apps (like Google Sheets or Slack), you'll need to grant access. Connect your accounts using OAuth or an API key and save the credentials in the node.
5
Test It
Run the workflow by clicking "Execute Node" for each step or "Run Once" for the whole thing. Check the right sidebar to inspect data and debug any errors (they'll show up in red).
6
Activate Workflow
Once everything works as expected, click the "Activate" toggle to turn your workflow on. You're all set!