This workflow follows the Agent → Chainsummarization 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 →
{
"id": "Xx4zOjRFLI8W9PiC",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "Analyze Reddit Posts with AI to Identify Business Opportunities",
"tags": [],
"nodes": [
{
"id": "52bdf7eb-ee1a-43c5-a0ad-199283003892",
"name": "When clicking \u2018Test workflow\u2019",
"type": "n8n-nodes-base.manualTrigger",
"position": [
-1400,
-640
],
"parameters": {},
"typeVersion": 1
},
{
"id": "e9a000b6-2f35-4928-a8d8-aa2d8cc27513",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-360,
-760
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini",
"cachedResultName": "gpt-4o-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "cd38a8b6-1369-4209-a80e-9e9949df49c0",
"name": "OpenAI Chat Model1",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
680,
-1080
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "4749ca62-6061-4dc0-8f1a-b0e995bb3d0f",
"name": "OpenAI Chat Model2",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
640,
-220
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "ed68c267-9716-4930-b210-d1f1ae89d8c8",
"name": "Post Sentiment Analysis",
"type": "@n8n/n8n-nodes-langchain.sentimentAnalysis",
"position": [
740,
-400
],
"parameters": {
"options": {},
"inputText": "={{ $json.postcontent }}"
},
"typeVersion": 1
},
{
"id": "2e651e62-00dd-4f0d-a8bc-ce4d8b9fa1d7",
"name": "Positive Posts Draft",
"type": "n8n-nodes-base.gmail",
"position": [
1260,
-560
],
"parameters": {
"message": "={{ $json.postcontent }}",
"options": {},
"subject": "Positive Post",
"resource": "draft"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "29d478d2-43d4-467a-89c2-8c97ea6e245c",
"name": "Neutral Posts Draft",
"type": "n8n-nodes-base.gmail",
"position": [
1280,
-380
],
"parameters": {
"message": "={{ $json.postcontent }}",
"options": {},
"subject": "Neutral Post",
"resource": "draft"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "c289805f-5246-4f3a-9052-48c426da8ce0",
"name": "Negative Posts Draft",
"type": "n8n-nodes-base.gmail",
"position": [
1280,
-160
],
"parameters": {
"message": "={{ $json.postcontent }}",
"options": {},
"subject": "Negative Post",
"resource": "draft"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "00d17970-3195-4290-bb02-9956f31ecc8f",
"name": "Find Proper Solutions",
"type": "@n8n/n8n-nodes-langchain.openAi",
"position": [
840,
-1040
],
"parameters": {
"modelId": {
"__rl": true,
"mode": "list",
"value": "gpt-4o-mini",
"cachedResultName": "GPT-4O-MINI"
},
"options": {},
"messages": {
"values": [
{
"content": "=Based on the following Reddit post, suggest a business idea or service that I could create to help this problem for this business and other with similar needs.\n\nReddit post: \"{{ $json.postcontent }}\"\n\nProvide a concise description of a business idea or service that would adress this issue effectively for mutiple businesses facing similar challenges.\n"
}
]
}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.8
},
{
"id": "9bcbd874-5eed-47ce-9714-1aec71537fe2",
"name": "Post Summarization",
"type": "@n8n/n8n-nodes-langchain.chainSummarization",
"position": [
760,
-1280
],
"parameters": {
"options": {}
},
"typeVersion": 2
},
{
"id": "60991de9-ad29-484c-9233-966cc1980a03",
"name": "Merge Input",
"type": "n8n-nodes-base.merge",
"position": [
-80,
-700
],
"parameters": {
"mode": "combine",
"options": {},
"combineBy": "combineByPosition"
},
"typeVersion": 3
},
{
"id": "f78fbea9-5f7f-4a88-bde1-7c3f01613892",
"name": "Output The Results",
"type": "n8n-nodes-base.googleSheets",
"position": [
1520,
-1260
],
"parameters": {
"columns": {
"value": {
"Upvotes": "={{ $json.upvotes }}",
"Post_url": "={{ $json.url }}",
"Post_date": "={{ $json.date }}",
"Post_summary": "={{ $json.response.text }}",
"Post_solution": "={{ $json.message.content }}",
"Subreddit_size": "={{ $json.subreddit_subscribers }}"
},
"schema": [
{
"id": "Subreddit",
"type": "string",
"display": true,
"removed": true,
"required": false,
"displayName": "Subreddit",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Subreddit_size",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Subreddit_size",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Post_date",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Post_date",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Upvotes",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Upvotes",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Post_url",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Post_url",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Post_summary",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Post_summary",
"defaultMatch": false,
"canBeUsedToMatch": true
},
{
"id": "Post_solution",
"type": "string",
"display": true,
"removed": false,
"required": false,
"displayName": "Post_solution",
"defaultMatch": false,
"canBeUsedToMatch": true
}
],
"mappingMode": "defineBelow",
"matchingColumns": [
"test"
],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {},
"operation": "append",
"sheetName": {
"__rl": true,
"mode": "list",
"value": "gid=0",
"cachedResultUrl": "https://docs.google.com/spreadsheets/d/1C8grVByPo3osYiV5X1pWhEUR9NhBXJGXBE75wC5o6rE/edit#gid=0",
"cachedResultName": "sheet1"
},
"documentId": {
"__rl": true,
"mode": "id",
"value": "1C8grVByPo3osYiV5X1pWhEUR9NhBXJGXBE75wC5o6rE"
}
},
"credentials": {
"googleSheetsOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.5
},
{
"id": "a0259ed2-0615-4e92-9e7e-cbff8c5bc0ce",
"name": "Merge 3 Inputs",
"type": "n8n-nodes-base.merge",
"position": [
1340,
-1040
],
"parameters": {
"mode": "combine",
"options": {},
"combineBy": "combineByPosition",
"numberInputs": 3
},
"typeVersion": 3
},
{
"id": "b7326fd0-5379-42ac-b355-ef6c3c1790f9",
"name": "Filter Posts By Features",
"type": "n8n-nodes-base.if",
"position": [
-980,
-640
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "0823d10a-ad54-4d82-bcea-9dd236e97857",
"operator": {
"type": "number",
"operation": "gt"
},
"leftValue": "={{ $json.ups }}",
"rightValue": 2
},
{
"id": "bb8187aa-f0f1-4999-8d4b-bdc9abba0618",
"operator": {
"type": "string",
"operation": "notEmpty",
"singleValue": true
},
"leftValue": "={{ $json.selftext }}",
"rightValue": ""
},
{
"id": "539f0f5c-025a-4f82-9b3a-2ef1ad3a2d96",
"operator": {
"type": "dateTime",
"operation": "after"
},
"leftValue": "={{ DateTime.fromSeconds($json.created).toISO() }}",
"rightValue": "={{ $today.minus(180,'days').toISO() }}"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "11c45f28-97c0-4087-975c-651f27438956",
"name": "Filter Posts By Content",
"type": "n8n-nodes-base.if",
"position": [
180,
-680
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "d5d38c01-3a88-4767-b488-d9c04145bb8f",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.output }}",
"rightValue": "yes"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "efede239-eff5-4e38-b40d-3cefea040644",
"name": "Select Key Fields",
"type": "n8n-nodes-base.set",
"position": [
-740,
-660
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "e5082ecc-3add-474e-bdb5-b8ad64729930",
"name": "upvotes",
"type": "string",
"value": "={{ $json.ups }}"
},
{
"id": "a92b5859-fbcc-40c2-95e0-452b12530d98",
"name": "subreddit_subscribers",
"type": "number",
"value": "={{ $json.subreddit_subscribers }}"
},
{
"id": "a846e21c-6cff-4521-9e0c-a32fa1305376",
"name": "postcontent",
"type": "string",
"value": "={{ $json.selftext }}"
},
{
"id": "b8045389-684d-4872-9e32-9a6b5511eb2b",
"name": "url",
"type": "string",
"value": "={{ $json.url }}"
},
{
"id": "f182fedc-1b09-40fe-aeb5-2473263da442",
"name": "date",
"type": "string",
"value": "={{ DateTime.fromSeconds($json.created).toISO() }}"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "1a99fdaa-6857-4210-a695-71ce531c1fa0",
"name": "Analysis Content By AI",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
-460,
-940
],
"parameters": {
"text": "Decide whether this reddit post is describing a business-related problem or a need for a solution. The post should mention a specific challenge \n or requirement that a business is trying to address.\nReddit post: {{ $json.postcontent }}\nIs this post about a business problem or need for a solution ? Output only yes or no",
"agent": "conversationalAgent",
"options": {},
"promptType": "define"
},
"typeVersion": 1.7
},
{
"id": "72b30080-e1f2-48b4-b816-ff43542cc6f1",
"name": "Get Posts",
"type": "n8n-nodes-base.reddit",
"position": [
-1180,
-640
],
"parameters": {
"limit": 20,
"keyword": "looking for a solution",
"operation": "search",
"subreddit": "=smallbusiness",
"additionalFields": {
"sort": "hot"
}
},
"credentials": {
"redditOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "c4ecb9ec-4895-4b41-ba7e-185e3769ce41",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1500,
-880
],
"parameters": {
"width": 880,
"height": 440,
"content": "# Data Collection\n## Retrieves recent popular posts from specified Reddit communities\n## Filters content by engagement metrics and keywords"
},
"typeVersion": 1
},
{
"id": "49735ff9-7f15-4050-9c46-6c13666479bd",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
560,
-620
],
"parameters": {
"width": 1020,
"height": 660,
"content": "# Post Sentiment Analysis\n## "
},
"typeVersion": 1
},
{
"id": "17048a9e-6080-406e-a4e7-5d57406576e1",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-500,
-1160
],
"parameters": {
"color": 4,
"width": 820,
"height": 680,
"content": "# Analysis Content\n## Emerging market needs\n## Underserved customer demands"
},
"typeVersion": 1
},
{
"id": "5a412abc-3866-44ba-9ab0-8cc0a3e012f2",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
520,
-1480
],
"parameters": {
"color": 6,
"width": 1220,
"height": 640,
"content": "# Insight Generation And Output \n## Generates executive summaries of key opportunities\n## Consolidates findings in Google Sheets"
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "c78fd7b7-d3e4-48f2-9f82-81ff71ef49a7",
"connections": {
"Get Posts": {
"main": [
[
{
"node": "Filter Posts By Features",
"type": "main",
"index": 0
}
]
]
},
"Merge Input": {
"main": [
[
{
"node": "Filter Posts By Content",
"type": "main",
"index": 0
}
]
]
},
"Merge 3 Inputs": {
"main": [
[
{
"node": "Output The Results",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "Analysis Content By AI",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Select Key Fields": {
"main": [
[
{
"node": "Merge Input",
"type": "main",
"index": 1
},
{
"node": "Analysis Content By AI",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model1": {
"ai_languageModel": [
[
{
"node": "Post Summarization",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"OpenAI Chat Model2": {
"ai_languageModel": [
[
{
"node": "Post Sentiment Analysis",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Output The Results": {
"main": [
[]
]
},
"Post Summarization": {
"main": [
[
{
"node": "Merge 3 Inputs",
"type": "main",
"index": 0
}
]
]
},
"Find Proper Solutions": {
"main": [
[
{
"node": "Merge 3 Inputs",
"type": "main",
"index": 1
}
]
]
},
"Analysis Content By AI": {
"main": [
[
{
"node": "Merge Input",
"type": "main",
"index": 0
}
]
]
},
"Filter Posts By Content": {
"main": [
[
{
"node": "Post Summarization",
"type": "main",
"index": 0
},
{
"node": "Find Proper Solutions",
"type": "main",
"index": 0
},
{
"node": "Merge 3 Inputs",
"type": "main",
"index": 2
},
{
"node": "Post Sentiment Analysis",
"type": "main",
"index": 0
}
]
]
},
"Post Sentiment Analysis": {
"main": [
[
{
"node": "Positive Posts Draft",
"type": "main",
"index": 0
}
],
[
{
"node": "Neutral Posts Draft",
"type": "main",
"index": 0
}
],
[
{
"node": "Negative Posts Draft",
"type": "main",
"index": 0
}
]
]
},
"Filter Posts By Features": {
"main": [
[
{
"node": "Select Key Fields",
"type": "main",
"index": 0
}
]
]
},
"When clicking \u2018Test workflow\u2019": {
"main": [
[
{
"node": "Get Posts",
"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.
gmailOAuth2googleSheetsOAuth2ApiopenAiApiredditOAuth2Api
Pro
For the full experience including quality scoring and batch install features for each workflow upgrade to Pro
How this works
Business owners and marketers can uncover hidden opportunities by analysing Reddit posts with AI, spotting trends in customer discussions that reveal unmet needs or emerging demands. This workflow scans subreddit content for sentiment, using OpenAI's chat models to interpret discussions and identify potential business ideas, such as new product features or service gaps. The key step involves sentiment analysis to categorise posts as positive, neutral, or negative, followed by drafting targeted Gmail emails with insights for quick follow-up, streamlining the process of turning social chatter into actionable strategies.
Use this workflow when monitoring specific subreddits for real-time market intelligence, like gauging reactions to industry news or competitor launches, to inform decisions swiftly. Avoid it for high-volume data needs, as the event-driven trigger suits occasional scans rather than constant polling; opt for scheduled triggers instead. Common variations include routing positive insights to Google Sheets for tracking or integrating additional AI summarisation to condense lengthy threads into concise reports.
About this workflow
Analyze Reddit Posts with AI to Identify Business Opportunities. Uses manualTrigger, lmChatOpenAi, sentimentAnalysis, gmail. Event-driven trigger; 22 nodes.
Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →
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