What Is n8n?
n8n is an open-source, self-hostable workflow automation platform that lets you build complex automations and AI agent workflows using a visual node-based interface — with no code required.
Xelionlabs AI & Automation GlossaryHow n8n Works
n8n (pronounced "nodemation") uses a canvas-based interface where you build workflows by connecting nodes. Each node represents an app or action — Gmail, Slack, OpenAI, HTTP requests, databases, spreadsheets, and hundreds more. You drag nodes onto the canvas, connect them, configure triggers and outputs, and activate. The workflow then runs automatically every time the trigger fires.
What sets n8n apart from tools like Zapier is depth: you can add conditional logic, loops, error handling, custom JavaScript, and — crucially — AI agent nodes. n8n's AI Agent node lets you define a goal and give the agent a set of tools (web search, email, database queries). The LLM then decides which tools to use and in what order, running multiple steps autonomously. This makes n8n one of the most powerful no-code platforms for building real AI agents in 2026.
n8n is also the only major automation platform that can be fully self-hosted. This matters for companies with data privacy requirements, since all workflow data stays on your own infrastructure. The self-hosted version is free under the open-source license — you only pay for the VPS or server you run it on.
Real-World Example
A founder uses n8n to build an AI agent workflow that runs every hour. It monitors their Gmail inbox for emails that look like inbound leads, uses an OpenAI node to extract the sender's name, company, and interest, adds them to Airtable as a new lead record, and sends a personalized reply email using a GPT-4o-generated draft — all in one visual workflow, self-hosted on a $6/month VPS, at zero per-task cost.
How n8n Relates to Adjacent Concepts
Workflow Automation is what n8n is built for. n8n is one of the most capable tools in this space, supporting complex branching, looping, and error handling that simpler tools can't match.
AI Agents are where n8n has pulled ahead of competitors. Its native AI Agent node, combined with tool-calling support for dozens of services, makes it possible to build production-ready AI agents without writing code. See: How to Build an AI Agent with n8n.
Compared to alternatives: n8n vs Make — n8n wins on power, self-hosting, and AI; Make wins on simplicity. See also: n8n vs Make vs Zapier — Full Comparison.
Key Facts About n8n
- Open-source under a "fair-code" license (Apache 2.0 core + Enterprise extensions) — free to self-host
- Over 400 native integrations: Google Workspace, Slack, HubSpot, Airtable, Notion, databases, HTTP, and more
- Can be self-hosted on any server or VPS; also available as n8n Cloud (managed, paid)
- Native AI Agent nodes support GPT-4o, Claude, Gemini, Mistral, and any OpenAI-compatible API
- Founded in Berlin (2019); one of the fastest-growing open-source projects in the automation space
- Supports JavaScript expressions and full custom code nodes for advanced logic
- Used by 50,000+ organizations worldwide as of 2025, including many mid-market and enterprise teams
Frequently Asked Questions
What is n8n used for?
n8n is used to build automated workflows and AI agent systems. Common use cases include lead automation (CRM + email), AI-powered document processing, data sync between apps, customer support automation, internal operations workflows, and building multi-step AI agents that use tools like OpenAI, web search, and databases.
Is n8n free?
Yes. n8n is free to self-host under its open-source license (Apache 2.0 with Enterprise extensions). You can run it on your own server at no cost with unlimited workflows and executions. n8n also offers a paid cloud-hosted version starting at around $20/month, which removes the need to manage infrastructure.
How does n8n compare to Zapier?
n8n is more powerful and flexible than Zapier — it supports complex logic (loops, branches, custom code), AI/LLM nodes, and can be self-hosted for free. Zapier is simpler and better for quick, linear automations between popular apps. For anything involving AI agents, custom logic, or cost-sensitive scale, n8n wins.
Can n8n build AI agents?
Yes. n8n has native AI Agent nodes that let you build autonomous agents using LLMs like GPT-4o or Claude. You can give the agent tools (web search, email, database access), define its goal, and let it reason and act across multiple steps. This makes n8n one of the leading no-code platforms for AI agent development.
Do I need coding experience to use n8n?
No. n8n is designed as a no-code/low-code tool. You build workflows by dragging and connecting nodes in a visual canvas. However, n8n also supports JavaScript expressions and custom code nodes for advanced users who want more control. Most business automations can be built entirely without writing code.
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