---
title: Write regex using natural language in Cloudflare One
description: You can now use AI to write and explain regex operations in Cloudflare Gateway policies.
image: https://developers.cloudflare.com/changelog-preview.png
---

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## Write regex using natural language in Cloudflare One

May 27, 2026 

[ Cloudflare One ](https://developers.cloudflare.com/cloudflare-one/)[ Gateway ](https://developers.cloudflare.com/cloudflare-one/traffic-policies/) 

[Cloudflare Gateway](https://developers.cloudflare.com/cloudflare-one/traffic-policies/) policy selectors which support regular expressions can now be authored in the dashboard using natural language. When building a [policy](https://developers.cloudflare.com/cloudflare-one/traffic-policies/expression-syntax/) with a regex-based selector (like `matches regex`), you can describe what you want to match in plain English and the Cloudflare Agent will generate and validate a corresponding regular expression.

![Write policy regex using natural language](https://developers.cloudflare.com/_astro/gateway-regex-ai-generation.CtJ0S6FS_Z1WVe4K.webp) 

To get started, select a regex-compatible selector in the [Gateway policy builder](https://developers.cloudflare.com/cloudflare-one/traffic-policies/) and select the icon. You'll see an input field for natural language, such as "any URL starting with /api/v1" or ".com, .net, and .app hosts which contain `gooogle` in the host."

You can also use the tool to explain existing regular expressions. If a policy already contains a regex pattern, you can instantly generate a plain-language description.

A built-in feedback mechanism allows you to rate each interaction to help improve output quality over time.

For more information, refer to [Cloudflare One firewall policies](https://developers.cloudflare.com/cloudflare-one/traffic-policies/) and expect to see the same functionality supported soon in [Data loss prevention profiles](https://developers.cloudflare.com/cloudflare-one/data-loss-prevention/).

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