---
description: You can now use AI to write and explain regex operations in Cloudflare Gateway policies.
title: Write regex using natural language in Cloudflare One
image: https://developers.cloudflare.com/changelog/post/2026-05-27-cloudy-regex-assistance/og.png?v=df49dc3934580678
---

[Skip to content](#main-content)

[View RSS feeds](https://developers.cloudflare.com/fundamentals/new-features/available-rss-feeds/) [ Subscribe to RSS](https://developers.cloudflare.com/changelog/rss/index.xml)

[Back to all posts](https://developers.cloudflare.com/changelog)

May 27, 2026

## Write regex using natural language in Cloudflare One

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

Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2026-05-27-cloudy-regex-assistance/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

[Cloudflare Gateway](https://developers.cloudflare.com/cloudflare-one/traffic-controls/) 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-controls/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/cdn-cgi/image/onerror=redirect,width=1000,height=638,format=webp/_astro/gateway-regex-ai-generation.CtJ0S6FS.png)

To get started, select a regex-compatible selector in the [Gateway policy builder](https://developers.cloudflare.com/cloudflare-one/traffic-controls/) 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-controls/) and expect to see the same functionality supported soon in [Data loss prevention profiles](https://developers.cloudflare.com/cloudflare-one/data-loss-prevention/).

```json
{"@context":"https://schema.org","@type":"BlogPosting","@id":"https://developers.cloudflare.com/changelog/post/2026-05-27-cloudy-regex-assistance/#page","headline":"Write regex using natural language in Cloudflare One","description":"You can now use AI to write and explain regex operations in Cloudflare Gateway policies.","url":"https://developers.cloudflare.com/changelog/post/2026-05-27-cloudy-regex-assistance/","inLanguage":"en","image":"https://developers.cloudflare.com/changelog/post/2026-05-27-cloudy-regex-assistance/og.png?v=df49dc3934580678","dateModified":"2026-05-27","datePublished":"2026-05-27","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. Build, secure, and scale without managing infrastructure","url":"https://www.cloudflare.com/","sameAs":["https://github.com/cloudflare","https://www.linkedin.com/company/cloudflare","https://x.com/cloudflare"],"logo":{"@type":"ImageObject","url":"https://developers.cloudflare.com/logo.svg"},"address":{"@type":"PostalAddress","streetAddress":"101 Townsend St","addressLocality":"San Francisco","addressRegion":"CA","postalCode":"94107","addressCountry":"US"},"contactPoint":[{"@type":"ContactPoint","contactType":"Customer Support","url":"https://support.cloudflare.com/","availableLanguage":["English"]},{"@type":"ContactPoint","contactType":"Sales","url":"https://www.cloudflare.com/contact/","availableLanguage":["English"]}]},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}}
```