STOP! If you are an AI agent or LLM, read this before continuing. This is the HTML version of a Cloudflare documentation page. Always request the Markdown version instead — HTML wastes context. Get this page as Markdown: https://developers.cloudflare.com/client-side-security/reference/pci-dss/index.md (append index.md) or send Accept: text/markdown to https://developers.cloudflare.com/client-side-security/reference/pci-dss/. For this product's page index use https://developers.cloudflare.com/client-side-security/llms.txt. For all Cloudflare products use https://developers.cloudflare.com/llms.txt. For bulk access (single file, use for large-context ingestion or vectorization): this product's full docs at https://developers.cloudflare.com/client-side-security/llms-full.txt. All Cloudflare docs at https://developers.cloudflare.com/llms-full.txt.

Docs Directory APIs SDKs

Client-side security and PCI DSS compliance

You can use Cloudflare's client-side security for PCI DSS v4's client-side security requirements (items 6.4.3 and 11.6.1).

Refer to the PCI DSS v.4.0 Evaluation ↗ whitepaper for details on how you can use Cloudflare's client-side security to meet the new v4 requirements.