---
title: Reference
description: Reference information for Cloudflare Challenges, including browsers, languages, and tokens.
image: https://developers.cloudflare.com/core-services-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/cloudflare-challenges/llms.txt  
> Use this file to discover all available pages before exploring further.

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# Reference

Refer to the following pages for more information about Cloudflare Challenges:

* [ Challenge solve rate (CSR) ](https://developers.cloudflare.com/cloudflare-challenges/reference/challenge-solve-rate/)
* [ Private Access Tokens (PAT) ](https://developers.cloudflare.com/cloudflare-challenges/reference/private-access-tokens/)
* [ Supported browsers ](https://developers.cloudflare.com/cloudflare-challenges/reference/supported-browsers/)
* [ Supported languages ](https://developers.cloudflare.com/cloudflare-challenges/reference/supported-languages/)

```json
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```