💥🛠️Build a web search chatbot with GPT-4o and MCP Brave Search

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Important notice

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

1. Workflow Overview

MCP AI Chatbot using Brave Search Disclaimer: This workflow only works with local installations of n8n because it uses a community MCP node Who is this for? This workflow ...

Best for

Support Chatbot automation workflows
AI Chatbot automation workflows
advanced n8n builders looking for reusable templates

Tools used

@n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.chattrigger, n8n-nodes-mcp.mcpclienttool, @n8n/n8n-nodes-langchain.memorybufferwindow, @n8n/n8n-nodes-langchain.lmchatopenai, n8n-nodes-base.stickynote

Source and attribution

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

Original n8n.io source

1.1 Workflow description

Title: 💥🛠️Build a web search chatbot with GPT-4o and MCP Brave Search
Workflow name: 💥🛠️Build a web search chatbot with GPT-4o and MCP Brave Search

MCP AI Chatbot using Brave Search

Disclaimer: This workflow only works with local installations of n8n because it uses a community MCP node

Who is this for?

This workflow is ideal for developers, automation enthusiasts, and businesses looking to integrate AI-powered chat capabilities into their workflows. It's particularly useful for those leveraging Brave Search and MCP tools to enhance user interactions and streamline data retrieval.

What problem is this workflow solving?

This workflow addresses the challenge of creating an intelligent chatbot that can process user queries, execute searches using Brave Search, and provide responses enriched by AI. It simplifies the integration of multiple tools into a cohesive system, saving time and effort for users who need a robust conversational AI solution.

What this workflow does

Listens for incoming chat messages using the Chat Trigger node.
Processes user input with an AI Agent powered by GPT-4o.
Retrieves relevant tools using the MCP Get Brave Tools node.
Executes specific search queries via the MCP Execute Brave Search node.
Maintains short-term memory of conversations with the Simple Memory node.

Setup

Prerequisites:
- Access to an n8n instance (self-hosted).
- API credentials for OpenAI and MCP Client Tools.
- Brave Search API key.
Steps:
- Import the workflow JSON into your n8n instance.
- Configure the API credentials for OpenAI and MCP Client Tools in their respective nodes.
- Set up your Brave Search API key in the MCP nodes. https://brave.com/search/api/
Testing:
- Use the built-in chat interface to send test messages.
- Verify that the chatbot processes queries and returns results as expected.

How to customize this workflow to your needs

Modify the AI Agent's prompt settings to tailor responses to your specific use case.
Adjust the memory buffer in the Simple Memory node to retain more or less conversational context.
Replace or add additional tools in the MCP nodes to expand functionality.

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 - AI Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 1.8

Block 2 - When chat message received

Type / Role: @n8n/n8n-nodes-langchain.chatTrigger - chatTrigger
Config choices: Version 1.1

Block 3 - MCP Get Brave Tools

Type / Role: n8n-nodes-mcp.mcpClientTool - mcpClientTool
Config choices: Version 1

Block 4 - MCP Execute Brave Search

Type / Role: n8n-nodes-mcp.mcpClientTool - mcpClientTool
Config choices: Version 1

Block 5 - Simple Memory

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

Block 6 - gpt-4o

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

Block 7 - Sticky Note

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

Block 8 - Sticky Note3

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

Block 9 - Sticky Note4

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

Block 10 - Sticky Note5

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

Block 11 - Sticky Note6

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

Block 12 - Sticky Note7

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

Block 13 - Sticky Note8

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

Block 14 - Sticky Note1

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

Block 15 - Sticky Note2

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

3. Summary Table

Workflow	💥🛠️Build a web search chatbot with GPT-4o and MCP Brave Search
Complexity	advanced
Nodes	15
Categories	Support Chatbot, AI Chatbot
Author	Joseph LePage
Published	17 Mar 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/3189/3189.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 Support Chatbot workflows AI Chatbot workflows

Frequently asked questions

What does 💥🛠️Build a web search chatbot with GPT-4o and MCP Brave Search do?

MCP AI Chatbot using Brave Search Disclaimer: This workflow only works with local installations of n8n because it uses a community MCP node Who is this for? This workflow ...

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 Support Chatbot, AI Chatbot use case.

Joseph LePage

33 workflows

Nodes

@n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.chattrigger n8n-nodes-mcp.mcpclienttool @n8n/n8n-nodes-langchain.memorybufferwindow @n8n/n8n-nodes-langchain.lmchatopenai n8n-nodes-base.stickynote

Complexity

advanced

Published 17 Mar 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/3189/3189.json

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💥🛠️Build a web search chatbot with GPT-4o and MCP Brave Search

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

MCP AI Chatbot using Brave Search

Who is this for?

What problem is this workflow solving?

What this workflow does

Setup

How to customize this workflow to your needs

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - AI Agent

Block 2 - When chat message received

Block 3 - MCP Get Brave Tools

Block 4 - MCP Execute Brave Search

Block 5 - Simple Memory

Block 6 - gpt-4o

Block 7 - Sticky Note

Block 8 - Sticky Note3

Block 9 - Sticky Note4

Block 10 - Sticky Note5

Block 11 - Sticky Note6

Block 12 - Sticky Note7

Block 13 - Sticky Note8

Block 14 - Sticky Note1

Block 15 - Sticky Note2

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