n8n Guardrails - New Node!

https://www.piotr-sikora.com/blog/2025-11-17-n8n-guardrails-testing | https://docs.n8n.io/release-notes/#guardrails-node

The Guardrails node provides a set of rules and policies that control an AI agent's behavior by filtering its inputs and outputs. This helps safeguard from malicious input and from generating unsafe or undesirable responses.

There are two operations:

- Check Text for Violations: Validate text against a set of policies (e.g. NSFW, prompt injection).
- Sanitize Text: Detects and replaces specific data such as PII, URLs, or secrets with placeholders.