> For the complete documentation index, see [llms.txt](https://themesic-docs.gitbook.io/whmcs-integration-module-for-perfex-crm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://themesic-docs.gitbook.io/whmcs-integration-module-for-perfex-crm/readme.md).

# WHMCS Integration module for Perfex CRM

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Thank you for purchasing the WHMCS to Perfex CRM Integration Module. This module allows you to **sync client and invoice data from WHMCS to Perfex CRM automatically**, keeping your customer records and billing information up to date without manual data entry. With this one-way integration, you can streamline workflows, reduce errors, and give your team instant access to WHMCS client information directly inside Perfex CRM.

#### Dependencies

* You need a **WHMCS installation** with API access enabled. Detailed instructions for creating an API user are provided in the Configuration section.
* A **Perfex CRM instance** is required. Ensure you have administrative access to configure the module correctly.
* The integration works as a **one-way sync**: WHMCS is the source of truth. Any changes in Perfex CRM will not be sent back to WHMCS.