Guardrails in n8n: a new level of security for LLM automation

2025-11-18

If you use n8n for automations involving large language models (LLM), you probably know not only about their huge capabilities but also about the risks. LLMs remain a “black box”: they can accidentally disclose personal data, generate toxic content, or fall victim to prompt injection.

Until recently, you had to “wrap” an AI workflow with many IF nodes and complex Regex checks. It was cumbersome and unreliable.

Since version 1.119.0 n8n includes the Guardrails node — and it’s truly a game-changer. It’s your personal security layer that you can place at the input and output of any AI process.