n8n is a workflow automation platform: you connect apps and services into automated processes using a visual editor of “nodes”. What makes it stand out is that it can be self-hosted, it offers code-level flexibility when you need it, and it has built-in AI nodes for language models, agents and retrieval. See its entry in our tools directory.

How it works

A workflow starts with a trigger — a schedule, a webhook, a new email, a form submission, a new row in a spreadsheet. It then passes data through a chain of nodes: fetching data from an API, transforming it, applying logic, calling an AI model, and sending results somewhere else. Each node shows the data flowing through it, which makes debugging much easier than in many automation tools.

n8n has integrations with hundreds of applications, plus generic HTTP request nodes for any API and code nodes for JavaScript or Python when you need custom logic.

AI features

  • Language model nodes connect to major model providers and local models.
  • AI agent nodes let a model decide which tools to call — for example search, a database query or sending an email — within a workflow.
  • Retrieval components: loading documents, splitting text, creating embeddings and storing them in vector databases for question-answering over your own data.
  • Memory for conversational agents.

Example automations

  1. Support triage: new support emails are classified by an AI model into categories and urgency, summarized, and posted to the right team channel with a suggested reply.
  2. Content pipeline: an RSS feed triggers a workflow that summarizes new articles and drafts a weekly digest for human review.
  3. Lead enrichment: a new form submission is enriched with company information, scored and added to the CRM.
  4. Document Q&A bot: internal documents are indexed, and a chat interface answers employee questions with sources.
  5. Invoice processing: attachments are extracted, key fields parsed by an AI model, validated and saved to accounting software.

Self-hosting vs. cloud

n8n can run on your own server or in a container, which appeals to organizations that need to keep data in-house, want predictable costs or have compliance requirements. A managed cloud service is available for teams that prefer not to maintain infrastructure. Its license is described as “fair-code”: the source is available and self-hosting is free for many uses, with restrictions on certain commercial uses such as offering it as a competing service — check the license terms for your case.

n8n vs. alternatives

  • Compared with Zapier or Make: n8n offers more technical control, self-hosting and often lower costs at high volumes, but has a steeper learning curve for non-technical users.
  • Compared with custom code: n8n is faster to build and easier to maintain visually, while code offers complete flexibility for complex systems.

Tips for using AI in workflows

  • Keep a human approval step before AI-generated content is sent externally.
  • Limit tool permissions for agents, especially those that send messages or modify data.
  • Log inputs and outputs to review quality and costs.
  • Watch for prompt injection when processing untrusted content like inbound emails.

Who should try it

Technical teams, developers, operations people comfortable with APIs, and organizations that want automation with data control.

Our verdict

n8n is one of the most capable automation platforms for building AI workflows, especially if you value self-hosting and flexibility. Beginners may prefer simpler tools first, but it rewards the learning effort.

What to watch next

  • More advanced agent features in automation platforms.
  • Security practices for AI agents in business workflows.
  • Pricing and license changes in workflow automation tools.
  • Integration standards such as the Model Context Protocol.

Key takeaways

  • n8n builds visual automation workflows connecting apps and APIs.
  • Its AI nodes support language models, agents and retrieval over your data.
  • Self-hosting gives data control; a managed cloud is also available.
  • It offers more technical control than simpler automation tools.
  • Add human approvals, limit agent permissions and log activity.

Frequently asked questions

Is n8n free?

Self-hosting is free for many uses under its fair-code license; the managed cloud service is paid. Check the license for commercial cases.

Do I need to know how to code?

No for many workflows, but basic knowledge of APIs and data formats helps, and code nodes are available for advanced needs.

Can n8n use local AI models?

Yes, it can connect to locally hosted models as well as cloud model providers.