Relyagent for WHMCS — Model Context Protocol (MCP) AI Server

Relyagent turns your WHMCS installation into a self-hosted Model Context Protocol (MCP) server.

It allows AI assistants like Claude, Cursor, and ChatGPT to interact securely with your WHMCS data and operations via granular, admin-controlled tools, OAuth 2.0 authentication, and comprehensive audit logging.

Key Features

• Open MCP Standard: Exposes WHMCS functionality via the industry-standard Model Context Protocol (MCP) supported by Anthropic Claude, Cursor IDE, ChatGPT, and custom LLM agent pipelines.
• Scope-Gated Tool Sets: Granular tool control over clients, domains, hosting services, support tickets, invoices, and system health. Enable or disable individual tools per connection.
• OAuth 2.0 Authentication: Connect AI clients securely using OAuth 2.0 Authorization Code flow with PKCE or client credentials — no sharing of raw WHMCS admin passwords or database credentials.
• Per-Client Rate Limits: Configure hourly and daily request quotas for each AI connection to protect your server resources and WHMCS performance.
• Tamper-Evident Audit Logging: Every prompt, tool execution, parameter, and response is logged in the admin panel with timestamps and client identity.
• Self-Hosted & Private: Runs entirely on your own server. Your WHMCS business and client data stays between your server and your chosen AI client — never routed through third-party intermediaries.
• One-Click Updates: Automated integrity monitoring and built-in one-click updates directly within WHMCS.

Requirements

• WHMCS 8.13+ or WHMCS 9.x
• PHP 8.2, 8.3, 8.4, or 8.5
• ionCube Loader 13.0.2 or higher
• PHP curl, openssl, json, zip, and mbstring extensions
• Apache mod_rewrite enabled
• HTTPS / SSL certificate