> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mindgard.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Regex Refusal

### What is Regex Refusal?

Regex Refusal is a type of policy designed to allow users to filter out keywords that should not be flagged in your results.

For example

* **Guardrail response:** if your guardrail responds with "BLOCKED" when a malicious prompt is detected, then you can use the regex `.*BLOCKED.*` to ignore responses that have been blocked by your guardrail.