Fernanda Silva This workflow corresponds to n8n.io template #2637 — we link there as the canonical source.
This workflow follows the Chat Trigger → Memorypostgreschat recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"id": "2637",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "Chat Assistant (OpenAI assistant) with Postgres Memory And API Calling Capabalities",
"tags": [],
"nodes": [
{
"id": "c6e454af-70a1-4c65-8450-8159f7fc738b",
"name": "If",
"type": "n8n-nodes-base.if",
"position": [
160,
560
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 1,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "7ea831a4-0e20-4725-a6f5-3dc2f41f1cf4",
"operator": {
"type": "object",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.leadData }}",
"rightValue": ""
},
{
"id": "ccb46339-4e43-42e6-aa45-d5a0cbd62214",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "",
"rightValue": ""
}
]
}
},
"typeVersion": 2
},
{
"id": "2221736f-ef99-4ac8-8a81-51af6d4e7dcd",
"name": "Edit Fields1",
"type": "n8n-nodes-base.set",
"position": [
440,
960
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "19a16867-b574-4b99-82f1-a86752b7fe9f",
"name": "chatInput",
"type": "string",
"value": "=\"Hello, just so you can get to know me, with no intention of a response, please save this information in your memory. My name is {{ $json.leadData.name }}. I am {{ $json.leadData.age }} years old and currently live in {{ $json.leadData.city }}, {{ $json.leadData.state }}. My profession is {{ $json.leadData.profession }}, and my education level is {{ $json.leadData.educationLevel }}.\nIf I\u2019m part of an adhesion group and have an entity, it would be {{ $json.leadData.entity }}.\n\nI am using a {{ $json.leadData.deviceType }} device to access this through the {{ $json.leadData.channel }} channel. At the moment, I am looking for a health insurance plan of type {{ $json.leadData.quotationType }}.\""
},
{
"id": "0df8d578-8332-4cde-9044-489de16ab390",
"name": "session_id",
"type": "string",
"value": "={{ $json.session_id }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "6aa1b3a4-0e6a-4312-9d9f-f67c4bf8f443",
"name": "Edit Fields2",
"type": "n8n-nodes-base.set",
"position": [
920,
960
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "19a16867-b574-4b99-82f1-a86752b7fe9f",
"name": "chatInput",
"type": "string",
"value": "={{ $('Chat Trigger').item.json.chatInput}}"
},
{
"id": "0df8d578-8332-4cde-9044-489de16ab390",
"name": "session_id",
"type": "string",
"value": "={{ $('Chat Trigger').item.json.session_id }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "6afe6158-7a8b-4a83-a778-6fd28e2a11af",
"name": "OpenAI",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
600,
960
],
"parameters": {
"options": {},
"resource": "assistant",
"assistantId": {
"__rl": true,
"mode": "list",
"value": "asst_numdCoMZPQ6GwfiJg5drg9hr",
"cachedResultName": "Chat IA - Testes - Dezembro - APIS"
}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.4
},
{
"id": "4b961f1d-7da2-4a0b-98e3-7ec35ee14335",
"name": "Chat Trigger",
"type": "@n8n/n8n-nodes-langchain.chatTrigger",
"position": [
-20,
560
],
"parameters": {
"public": true,
"options": {},
"initialMessages": "Ol\u00e1 \ud83d\udc4b\nSou Jovelino, o servi\u00e7o de IA do Joov, me mande sua pergunta e responderei em seguida! :)"
},
"typeVersion": 1
},
{
"id": "dccdb07f-97db-4a5a-9b09-02a5de65246e",
"name": "Postgres Chat Memory",
"type": "@n8n/n8n-nodes-langchain.memoryPostgresChat",
"position": [
640,
720
],
"parameters": {
"tableName": "aimessages",
"sessionKey": "={{ $('Chat Trigger').item.json.session_id }}{{ $json.sessionId }}",
"sessionIdType": "customKey",
"contextWindowLength": 30
},
"credentials": {
"postgres": {
"name": "<your credential>"
}
},
"typeVersion": 1.3
},
{
"id": "553dd27b-ab06-4605-99e0-8f15735cfff3",
"name": "Postgres Chat Memory1",
"type": "@n8n/n8n-nodes-langchain.memoryPostgresChat",
"position": [
760,
1160
],
"parameters": {
"tableName": "aimessages",
"sessionKey": "={{ $('Chat Trigger').item.json.session_id }}{{ $json.sessionId }}",
"sessionIdType": "customKey",
"contextWindowLength": 1
},
"credentials": {
"postgres": {
"name": "<your credential>"
}
},
"typeVersion": 1.3
},
{
"id": "0103fb97-c691-4bd3-b26d-85aaa9774594",
"name": "Products in Daatabase",
"type": "n8n-nodes-base.mySqlTool",
"position": [
1460,
600
],
"parameters": {
"query": "SELECT * \nFROM Products p \nWHERE \n cityQuery = '{{ $fromAI(\"cityQuery\") }}' AND \n state = '{{ $fromAI(\"state\") }}' AND \n modality = 'PME' AND \n removed = 0 AND \n ({{ $fromAI(\"holderCount\") || 1 }} + {{ $fromAI(\"dependentsCount\") || 0 }}) BETWEEN p.minLifeAmount AND p.maxLifeAmount AND\n (CASE\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 0 AND 18 THEN priceAtAge0To18\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 19 AND 23 THEN priceAtAge19To23\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 24 AND 28 THEN priceAtAge24To28\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 29 AND 33 THEN priceAtAge29To33\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 34 AND 38 THEN priceAtAge34To38\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 39 AND 43 THEN priceAtAge39To43\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 44 AND 48 THEN priceAtAge44To48\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 49 AND 53 THEN priceAtAge49To53\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 54 AND 58 THEN priceAtAge54To58\n ELSE priceAtAge59To199\n END) IS NOT NULL\nORDER BY \n (CASE\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 0 AND 18 THEN priceAtAge0To18\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 19 AND 23 THEN priceAtAge19To23\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 24 AND 28 THEN priceAtAge24To28\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 29 AND 33 THEN priceAtAge29To33\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 34 AND 38 THEN priceAtAge34To38\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 39 AND 43 THEN priceAtAge39To43\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 44 AND 48 THEN priceAtAge44To48\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 49 AND 53 THEN priceAtAge49To53\n WHEN {{ $fromAI(\"holderAge\") }} BETWEEN 54 AND 58 THEN priceAtAge54To58\n ELSE priceAtAge59To199\n END) ASC, \n createdAt DESC\nLIMIT 3;\n",
"options": {
"detailedOutput": true
},
"operation": "executeQuery",
"descriptionType": "manual",
"toolDescription": "// Search for the X product bla bla bla"
},
"credentials": {
"mySql": {
"name": "<your credential>"
}
},
"typeVersion": 2.4
},
{
"id": "0cdfd89f-eb9e-4b6c-90d1-1cf8d6ed96bb",
"name": "Knowledge Base",
"type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
"position": [
1340,
600
],
"parameters": {
"url": "https://quotation.joov.com.br/widget/info?modalidade={modalidade}&estado=SP&cidade={city}&operadora={operadora}",
"toolDescription": "Here you will find the knowlegde base of my shop and bla bla bla Use this when they ask for price, whatever i want."
},
"typeVersion": 1.1
},
{
"id": "393f792a-4eff-4b33-aac0-025fc622a4b3",
"name": "External API",
"type": "@n8n/n8n-nodes-langchain.toolHttpRequest",
"position": [
1200,
600
],
"parameters": {
"url": "https://integracao-sed-alb-323570099.us-east-1.elb.amazonaws.com/findByNameAndBirthDate",
"method": "POST",
"jsonBody": "={\n \"name\": \"{{json.name}}\",\n \"birthdate\": \"{{json.birthdate }}\"\n}",
"sendBody": true,
"specifyBody": "json",
"toolDescription": "Pegue o nome completo em camel case, exemplo: Fernanda Melo, e a data de nacimento nesse formato: 1990-03-28"
},
"typeVersion": 1.1
},
{
"id": "7ce7a5e7-6238-4479-a26f-bdcde1784188",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
1160,
414
],
"parameters": {
"color": 5,
"width": 436.73182569600795,
"height": 367.7413881276459,
"content": "TOOLS"
},
"typeVersion": 1
},
{
"id": "df6737ca-c588-48fc-9761-2a5307841298",
"name": "OpenAI2",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
460,
460
],
"parameters": {
"text": "={{ $json.chatInput }}",
"prompt": "define",
"options": {},
"resource": "assistant",
"assistantId": {
"__rl": true,
"mode": "list",
"value": "asst_x2qfc7EuoPv7XGOL84ClEZ3L",
"cachedResultName": "PINE"
}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.4
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "d1dc3988-6677-47c9-b91a-6875c7b6151d",
"connections": {
"If": {
"main": [
[
{
"node": "Edit Fields1",
"type": "main",
"index": 0
}
],
[
{
"node": "OpenAI2",
"type": "main",
"index": 0
}
]
]
},
"OpenAI": {
"main": [
[
{
"node": "Edit Fields2",
"type": "main",
"index": 0
}
]
]
},
"Chat Trigger": {
"main": [
[
{
"node": "If",
"type": "main",
"index": 0
}
]
]
},
"Edit Fields1": {
"main": [
[
{
"node": "OpenAI",
"type": "main",
"index": 0
}
]
]
},
"Edit Fields2": {
"main": [
[
{
"node": "OpenAI2",
"type": "main",
"index": 0
}
]
]
},
"External API": {
"ai_tool": [
[
{
"node": "OpenAI2",
"type": "ai_tool",
"index": 0
}
]
]
},
"Knowledge Base": {
"ai_tool": [
[
{
"node": "OpenAI2",
"type": "ai_tool",
"index": 0
}
]
]
},
"Postgres Chat Memory": {
"ai_memory": [
[
{
"node": "OpenAI2",
"type": "ai_memory",
"index": 0
}
]
]
},
"Postgres Chat Memory1": {
"ai_memory": [
[
{
"node": "OpenAI",
"type": "ai_memory",
"index": 0
}
]
]
},
"Products in Daatabase": {
"ai_tool": [
[
{
"node": "OpenAI2",
"type": "ai_tool",
"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.
mySqlopenAiApipostgres
Pro
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About this workflow
Your workflow is an intelligent chatbot, using ++OpenAI assistant++, integrated with a backend that supports WhatsApp Business, designed to handle various use cases such as sales and customer support. Below is a breakdown of its functionality and key components: The flow starts…
Source: https://n8n.io/workflows/2637/ — original creator credit. Request a take-down →
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