About this recipe
A recipe for Chat With Openai Assistant (By Adding A Memory)
Recipe Template
{
"meta": {
"instanceId": "cb484ba7b742928a2048bf8829668bed5b5ad9787579adea888f05980292a4a7"
},
"nodes": [
{
"id": "087ae6e2-b333-4a30-9010-c78050203961",
"name": "OpenAI Assistant",
"type": "@n8n\/n8n-nodes-langchain.openAiAssistant",
"position": [
1340,
460
],
"parameters": {
"text": "=## Our Previous Conversation:\n{{ $json[\"messages\"].map(m => `\nHuman: ${m.human}\nAI Assistant: ${m.ai}\n`) }}\n## Current message:\n{{ $('Chat Trigger').item.json.chatInput }}",
"options": [],
"assistantId": "asst_HDSAnzsp4WqY4UC1iI9auH5z"
},
"credentials": {
"openAiApi": {
"id": "VQtv7frm7eLiEDnd",
"name": "OpenAi account 7"
}
},
"typeVersion": 1
},
{
"id": "3793b10a-ebb7-42ec-8b9b-7fa3a353d9a3",
"name": "Calculator",
"type": "@n8n\/n8n-nodes-langchain.toolCalculator",
"position": [
1500,
640
],
"parameters": [],
"typeVersion": 1
},
{
"id": "7bee2882-bb9e-402e-ba42-9b1ed0e1264b",
"name": "Chat Memory Manager",
"type": "@n8n\/n8n-nodes-langchain.memoryManager",
"position": [
760,
460
],
"parameters": [],
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "5c66e482-819e-47e7-90be-779e92364e2a",
"name": "Chat Memory Manager1",
"type": "@n8n\/n8n-nodes-langchain.memoryManager",
"position": [
1720,
460
],
"parameters": {
"mode": "insert",
"messages": {
"messageValues": [
{
"type": "user",
"message": "={{ $('Chat Trigger').item.json.chatInput }}"
},
{
"type": "ai",
"message": "={{ $json.output }}"
}
]
}
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "b96bf629-bd21-4528-8988-e63c5af89fd7",
"name": "Aggregate",
"type": "n8n-nodes-base.aggregate",
"position": [
1140,
460
],
"parameters": {
"options": [],
"aggregate": "aggregateAllItemData",
"destinationFieldName": "messages"
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "95001be1-f046-47e3-a58c-25bff170ba06",
"name": "Edit Fields",
"type": "n8n-nodes-base.set",
"position": [
2320,
460
],
"parameters": {
"fields": {
"values": [
{
"name": "output",
"stringValue": "={{ $('OpenAI Assistant').item.json.output }}"
}
]
},
"options": []
},
"typeVersion": 3.2
},
{
"id": "4ea04793-c7fb-4b81-abf7-49590aa76ca7",
"name": "Limit",
"type": "n8n-nodes-base.limit",
"position": [
2100,
460
],
"parameters": [],
"typeVersion": 1
},
{
"id": "16921f74-d420-445a-9e09-19a6116a3267",
"name": "Chat Trigger",
"type": "@n8n\/n8n-nodes-langchain.chatTrigger",
"position": [
460,
460
],
"webhookId": "1f83e8ac-d465-454a-8327-cef7f0149cb1",
"parameters": {
"public": true,
"options": {
"loadPreviousSession": "memory"
}
},
"typeVersion": 1
},
{
"id": "c0826494-779a-4c2d-93c9-746150ac9482",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
740,
400
],
"parameters": {
"color": 7,
"width": 514.8706020514577,
"height": 196.64941360686112,
"content": "Read contents of the chat from memory"
},
"typeVersion": 1
},
{
"id": "4ce4594d-070a-4985-9c5d-fcd4ebc4a627",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
1320,
400
],
"parameters": {
"color": 7,
"width": 298.02823821086326,
"height": 196.64941360686112,
"content": "Call the assistant, passing in the previous chat messages"
},
"typeVersion": 1
},
{
"id": "49885b3b-de77-4c02-a35e-d188fee38831",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
1700,
400
],
"parameters": {
"color": 7,
"width": 298.02823821086326,
"height": 196.64941360686112,
"content": "Add the latest chat messages to the memory"
},
"typeVersion": 1
},
{
"id": "f45e8589-d61b-440a-ae89-31ded2738ef7",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
2080,
400
],
"parameters": {
"color": 7,
"width": 356.0564764217267,
"height": 196.64941360686112,
"content": "Return the model output"
},
"typeVersion": 1
},
{
"id": "3b72a676-aaa2-472a-b055-1fed03f52101",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
360,
640
],
"parameters": {
"height": 300.48941882630095,
"content": "## Try me out\n1. In the OpenAI Assistant node, make sure your OpenAI credentials are set and choose an assistant to use (you'll need to create one if you don't have one already)\n2. Click the 'Chat' button below\n\n - In the first message, tell the AI what your name is\n - In a second message, ask the AI what your name is"
},
"typeVersion": 1
},
{
"id": "a2250328-e4ce-4ac6-b4fe-658ab173bc28",
"name": "Window Buffer Memory",
"type": "@n8n\/n8n-nodes-langchain.memoryBufferWindow",
"position": [
1280,
880
],
"parameters": {
"sessionKey": "={{ $('Chat Trigger').item.json.sessionId }}123",
"contextWindowLength": 20
},
"typeVersion": 1.1
}
],
"pinData": [],
"connections": {
"Limit": {
"main": [
[
{
"node": "Edit Fields",
"type": "main",
"index": 0
}
]
]
},
"Aggregate": {
"main": [
[
{
"node": "OpenAI Assistant",
"type": "main",
"index": 0
}
]
]
},
"Calculator": {
"ai_tool": [
[
{
"node": "OpenAI Assistant",
"type": "ai_tool",
"index": 0
}
]
]
},
"Chat Trigger": {
"main": [
[
{
"node": "Chat Memory Manager",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Assistant": {
"main": [
[
{
"node": "Chat Memory Manager1",
"type": "main",
"index": 0
}
]
]
},
"Chat Memory Manager": {
"main": [
[
{
"node": "Aggregate",
"type": "main",
"index": 0
}
]
]
},
"Chat Memory Manager1": {
"main": [
[
{
"node": "Limit",
"type": "main",
"index": 0
}
]
]
},
"Window Buffer Memory": {
"ai_memory": [
[
{
"node": "Chat Trigger",
"type": "ai_memory",
"index": 0
},
{
"node": "Chat Memory Manager",
"type": "ai_memory",
"index": 0
},
{
"node": "Chat Memory Manager1",
"type": "ai_memory",
"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!