n8n
n8n 3.0 Upgrade Guide: The Breaking Changes Checklist Before You Update
Upgrading to n8n 3.0? This checklist covers every breaking change: Docker-only deployment, 35+ removed nodes, security defaults, and a staged upgrade path.
Tutorial
MCP
Meta WhatsApp Business MCP Server Setup: Let an AI Agent Onboard Your Business Number
Set up Meta's WhatsApp Business Tools MCP server: connect Claude, Codex, or ChatGPT via OAuth and onboard numbers, templates, and webhooks by chat.
n8n
How to Fix n8n CVE-2026-44791: Patch the XML Node Prototype Pollution Bypass
Fix n8n CVE-2026-44791 (CVSS 9.4): upgrade self-hosted n8n to 1.123.43, 2.20.7, or 2.22.1, or disable the XML node via NODES_EXCLUDE. Docker and npm steps.
n8n
How to Use Ollama with n8n AI Agent: Run Local LLMs That Actually Call Tools
Connect Ollama to n8n's AI Agent: pick a tool-capable local model, fix skipped tool calls with Force Tool Call on First Iteration, and add a fallback model.
Automation
Make.com MCP Server Tutorial: Turn Your Scenarios into AI Tools
Turn Make.com scenarios into callable MCP tools: create an MCP token, wire up OAuth or token auth, lock down access by scenario, and handle timeouts.
MCP
MCP Postgres Server Tutorial: Safe Read-Only Database Access for AI Agents (2026)
Install Postgres MCP Pro in restricted mode behind a least-privilege read-only role: safe AI access to PostgreSQL, each step tested on a live database.
MCP
MCP Stateless Spec Migration Guide: Move Your Server to 2026-07-28 Without Downtime
Migrate your MCP server to the 2026-07-28 stateless spec: drop Mcp-Session-Id, add server/discover, send per-request _meta, and regression-test each step.
n8n
n8n Agents Tutorial: Build a Telegram AI Agent from Scratch (2026)
Build a Telegram AI agent with n8n Agents: an OpenRouter model, Todoist and Gmail tools, reusable skills, schedules, and workflow calls. Hands-on guide.
n8n
n8n Queue Mode Scaling Tutorial: Run Worker Processes with Redis (2026)
Run n8n in queue mode: a main instance plus Redis-backed worker processes for parallel executions. Docker Compose setup guide, verified on n8n 2.41.4.
n8n
How to Build an AI Support Chatbot in n8n: RAG Knowledge Base, Memory, and Human Escalation
Build an AI support chatbot in n8n: Chat Trigger, AI Agent with Simple Memory, RAG over your docs via Vector Store Retriever, plus a human escalation branch.