---
title: "System Requirements and Compatibility — citelayer®"
url: "https://citelayer.ai/docs/requirements/"
date: 2026-02-25
---

# System Requirements and Compatibility

The free plugin and the paid store add-ons have different runtime requirements. A feature may also need a newer WordPress API than the base plugin.

Supported runtime requirements
------------------------------

ComponentRequirementscitelayer® FreeWordPress 6.4+, PHP 7.4+WooCommerce add-onActive free plugin, PHP 8.1+, WooCommerce 8.0+; combined WordPress minimum 6.4EDD add-onActive free plugin, PHP 8.1+, EDD 3.0+; combined WordPress minimum 6.4Free MCP abilitiesWordPress 6.9+; MCP client transport through a separate adapterVerify your environment
-----------------------

1. Open Tools → Site Health → Info and check WordPress and PHP.
2. Confirm that the store platform and free plugin are active before activating an add-on.
3. Check the plugin version in Plugins rather than relying only on an old product screenshot.
4. Use the scanner and endpoint checks on your actual host.

SEO integration
---------------

The free plugin recognizes Yoast SEO, Rank Math, All in One SEO, The SEO Framework and Slim SEO. The integration differs by feature and provider. [Read the ownership and output checks](/docs/seo-compatibility/) before changing enhancement/replacement modes. SEOPress no longer has a dedicated compatibility path.

Builders, caching and hosting
-----------------------------

A builder can alter the rendered content and a cache or server rule can intercept a response before WordPress runs. Test your important page and product types directly. Do not treat a list of detected plugins as proof that every combination has been tested.

Next step
---------

Continue with [the quick start checklist](/docs/quick-start/), or [check the common questions](/docs/faq/). For a reproducible problem, send the plugin versions, affected URL, expected result and actual response through [Support](/support/). Do not include passwords, license keys or customer details.

Reviewed 6 October 2026 against citelayer® Free 1.13.5, WooCommerce add-on 1.2.19 and EDD add-on 1.2.1. Features depend on the active components and settings on your site.