🤖 Facebook AI Agent with MCP Server – Built for Smart Engagement and Automation
Hi! I'm Amanda 🥰😘 — I build intelligent automations with n8n and Make.
This powerful workflow was designed to help teams automatically handle Facebook page interactions with AI. Using Meta Graph API , LangChain , MCP Server , and GPT-4o , it allows your AI agent to search for posts, read captions, fetch comments , and even reply or message followers , all through structured tools.
🔧 What the workflow does
- Searches for recent media using Facebook Page ID and access token
- Reads and extracts captions or media URLs
- Fetches comments and specific replies from each post
- Replies to comments automatically with GPT-generated responses
- Sends direct messages to followers who commented
- Maps user input and session to keep memory context via LangChain
- Communicates via Server-Sent Events (SSE) using your MCP Server URL
🧰 Nodes & Tech Used
-
LangChain Agent + Chat Model with GPT-4o
-
Memory Buffer for session memory
-
toolHttpRequest to search media, comments, and send replies
-
MCP Trigger and MCP Tool (custom SSE connection)
-
Set node for input and variable assignment
-
Webhook and JSON for Facebook API structure
⚙️ Setup Instructions
- Create your Facebook App in Meta Developer Portal
- Add your Facebook Page ID and Access Token in the
Set node
- Update the MCP Server Tool URL in the
MCP Facebook node
- Use your n8n server URL (eg
https://yourdomain.com/mcp/server/facebook/sse )
- Trigger the workflow using the included
LangChain Chat Trigger
- Interact via text to ask the agent to:
- “Get latest posts”
- “Reply to comment X with this message”
- “Send DM to this user about...”
👥 Who this is for
- Social media teams managing multiple Facebook pages
- Brands automating engagement with followers
- Agencies creating smart, autonomous digital assistants
- Developers building conversational bots for Facebook
✅ Requirements
- Meta Graph API access
- Facebook Page (with permissions)
- n8n instance (Cloud or Self-hosted)
- MCP Server configured (SSE Endpoint enabled)
- OpenAI API Key (for GPT-4o + LangChain)
🌐 Want to use this workflow?
❤️ Buy workflows: https://iloveflows.com
☁️ Try n8n Cloud: https://n8n.partnerlinks.io/amanda
