Reddit content Q&A chatbot with GPT-4o and Reddit API

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

This workflow lets you chat with Reddit using OpenAI and the Reddit API. The chatbot pulls posts from a subreddit and uses GPT to answer your questions. ️ Setup Instructions 2️⃣ Set Up OpenAI Conn...

Best for

AI Chatbot automation workflows
Multimodal AI automation workflows
intermediate n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.chattrigger, @n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.reddittool, n8n-nodes-base.stickynote, @n8n/n8n-nodes-langchain.agent

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Robert Breen.

Original n8n.io source

1.1 Workflow description

Title: Reddit content Q&A chatbot with GPT-4o and Reddit API
Workflow name: Reddit content Q&A chatbot with GPT-4o and Reddit API

This workflow lets you chat with Reddit using OpenAI and the Reddit API.
The chatbot pulls posts from a subreddit and uses GPT to answer your questions.

⚙️ Setup Instructions

2️⃣ Set Up OpenAI Connection

Go to OpenAI Platform
Navigate to OpenAI Billing
Add funds to your billing account
Copy your API key into the OpenAI credentials in n8n

2️⃣ Set Up Reddit API

Go to Reddit Apps
Click Create App → Choose script type
Fill in:
- Name: (your choice)
- Redirect URI: http://localhost:8080 (or your n8n URL)
- Save → copy Client ID and Secret
In n8n → Credentials → New → Reddit OAuth2 API
- Enter Client ID + Client Secret
- Log in with your Reddit account and approve access
Attach this credential to the Reddit Tool node

🧠 How It Works

Reddit Tool Node → Fetches posts from chosen subreddit (e.g., r/n8n)
OpenAI Agent → Processes posts and your chat question
Chatbot → Returns summarized answers with Reddit context

📬 Contact

Need help customizing this (e.g., targeting multiple subreddits or filtering posts)?

📧 [email protected]
🔗 Robert Breen
🌐 ynteractive.com

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - When chat message received

Type / Role: @n8n/n8n-nodes-langchain.chatTrigger - chatTrigger
Config choices: Version 1.3

Block 2 - OpenAI Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 3 - Get many posts in Reddit

Type / Role: n8n-nodes-base.redditTool - redditTool
Config choices: Version 1

Block 4 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 5 - Sticky Note25

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 6 - Reddit Chatbot

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 7 - Sticky Note56

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 8 - Sticky Note26

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Reddit content Q&A chatbot with GPT-4o and Reddit API
Complexity	intermediate
Nodes	8
Categories	AI Chatbot, Multimodal AI
Author	Robert Breen
Published	24 Aug 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/7798/7798.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source AI Chatbot workflows Multimodal AI workflows

Frequently asked questions

What does Reddit content Q&A chatbot with GPT-4o and Reddit API do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your AI Chatbot, Multimodal AI use case.

Robert Breen

90 workflows

Nodes

@n8n/n8n-nodes-langchain.chattrigger @n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.reddittool n8n-nodes-base.stickynote @n8n/n8n-nodes-langchain.agent

Complexity

intermediate

Published 24 Aug 2025

Likes 0

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Install path: /data/workflows/7798/7798.json

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Reddit content Q&A chatbot with GPT-4o and Reddit API

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

⚙️ Setup Instructions

2️⃣ Set Up OpenAI Connection

2️⃣ Set Up Reddit API

🧠 How It Works

📬 Contact

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - When chat message received

Block 2 - OpenAI Chat Model

Block 3 - Get many posts in Reddit

Block 4 - Sticky Note1

Block 5 - Sticky Note25

Block 6 - Reddit Chatbot

Block 7 - Sticky Note56

Block 8 - Sticky Note26

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions