WHMCS MCP Server

MCP (Model Context Protocol) server for full integration with the WHMCS API.

Features

Tickets and Support

• List tickets with advanced filters
• View full ticket details (including replies and notes)
• Create new tickets
• Add replies to tickets
• Update ticket properties
• List support departments
• View ticket statuses with counts
• Full ticket statistics

Clients

• List clients with filters and pagination
• View full client details (with stats)

Products and Orders

• List available products/services
• List orders with filters

Invoices

• List invoices with filters and sorting

General

• Secure authentication via API credentials
• Fully typed with TypeScript
• 34 MCP tools implemented and tested

Available Tools (34)

Tickets

1. whmcs_get_tickets - List tickets with filters
2. whmcs_get_ticket - View a specific ticket with all replies
3. whmcs_get_ticket_counts - Ticket statistics and counts
4. whmcs_open_ticket - Create a new ticket
5. whmcs_add_ticket_reply - Reply to a ticket
6. whmcs_update_ticket - Update ticket properties

Support

7. whmcs_get_support_departments - List departments
8. whmcs_get_support_statuses - View statuses with counts

Clients

9. whmcs_get_clients - List clients
10. whmcs_get_clients_details - Full client details
11. whmcs_get_clients_products - Client products/services
12. whmcs_get_clients_domains - Client domains
13. whmcs_get_contacts - Client contacts
14. whmcs_get_emails - Email history

Products, Orders, and Invoices

15. whmcs_get_products - List products/services
16. whmcs_get_orders - List orders
17. whmcs_get_invoices - List invoices

Billing Analysis

18. whmcs_find_invoice_gaps - Find missing invoice months per client
19. whmcs_list_clients_with_pending_invoices - List clients with unpaid/overdue invoices

System and Administration

20. whmcs_get_activity_log - Activity log (116k+ entries)
21. whmcs_get_stats - Full statistics (revenue, orders, tickets)
22. whmcs_get_currencies - Configured currencies
23. whmcs_get_payment_methods - Active payment methods
24. whmcs_get_admin_users - Admin users

Combined Invoices

25. whmcs_get_unpaid_invoices_detailed - Unpaid invoices with client and product details
26. whmcs_get_all_unpaid_invoices_complete - All unpaid invoices with full details

Service Management

27. whmcs_module_suspend - Suspend service
28. whmcs_module_unsuspend - Unsuspend service
29. whmcs_module_terminate - Terminate service permanently
30. whmcs_module_create - Provision service

Order Management

31. whmcs_accept_order - Accept and activate order
32. whmcs_cancel_order - Cancel order
33. whmcs_delete_order - Delete order permanently
34. whmcs_pending_order - Set order as pending

Quick Install

Claude Code (one command)

claude mcp add whmcs \
  -e WHMCS_API_URL=https://your-whmcs.com/includes/api.php \
  -e WHMCS_IDENTIFIER=your_identifier \
  -e WHMCS_SECRET=your_secret \
  -- npx -y whmcs-mcp

Or with admin credentials instead of API keys:

claude mcp add whmcs \
  -e WHMCS_API_URL=https://your-whmcs.com/includes/api.php \
  -e WHMCS_USERNAME=your_admin_user \
  -e WHMCS_PASSWORD=your_admin_password \
  -- npx -y whmcs-mcp

That's it. Run claude mcp list to verify.

Claude Desktop

Add to your claude_desktop_config.json (location by OS):

{
  "mcpServers": {
    "whmcs": {
      "command": "npx",
      "args": ["-y", "whmcs-mcp"],
      "env": {
        "WHMCS_API_URL": "https://your-whmcs.com/includes/api.php",
        "WHMCS_IDENTIFIER": "your_identifier",
        "WHMCS_SECRET": "your_secret"
      }
    }
  }
}

Restart Claude Desktop and the 34 tools will be available.

Alternative: mcp.json file

If you prefer a config file instead of env vars, create mcp.json in the project root:

cp mcp.example.json mcp.json
# edit mcp.json with your credentials

When using admin credentials with username/password, the server automatically hashes the password with MD5 (WHMCS requirement). You can also provide an already MD5-hashed password.

Adding credentials later

If you already added the MCP server but didn't have the credentials yet:

Claude Code: run claude mcp add whmcs ... again with the -e flags -- it overwrites the previous entry.

Claude Desktop: open claude_desktop_config.json and add the env block to the existing whmcs entry:

"env": {
  "WHMCS_API_URL": "https://your-whmcs.com/includes/api.php",
  "WHMCS_IDENTIFIER": "your_identifier",
  "WHMCS_SECRET": "your_secret"
}

Then restart Claude Desktop.

Usage Examples

In Claude Code, you can ask questions like:

Tickets:

• "List the last 10 open tickets"
• "Show details for ticket #123456"
• "How many tickets are awaiting response?"
• "Which support departments are available?"

Clients:

• "List the last 5 active clients"
• "Show details for client ID 123"
• "How many clients do we have total?"

Products:

• "List all available products"
• "Which products are in group 5?"

Orders and Invoices:

• "List the last 10 orders"
• "Show overdue invoices"

Technologies

• TypeScript
• MCP SDK (@modelcontextprotocol/sdk)
• Axios (HTTP client)
• WHMCS API v1

Project Structure

whmcs-mcp/
├── src/                # TypeScript source code
│   ├── index.ts        # MCP server (34 tools)
│   ├── config.ts       # Config loader (env vars → mcp.json)
│   ├── whmcs-client.ts # API client (34 methods)
│   └── types.ts        # TypeScript types
├── test/               # Unit tests
├── build/              # Compiled output
├── mcp.example.json    # Config file template (optional)
└── package.json

Development

# Watch mode (auto rebuild)
npm run dev

# Manual build
npm run build

# Run the MCP server with the default mcp.json
node build/index.js

# Run with a custom config path
node build/index.js --config /absolute/path/mcp.json

# Test client directly
node -e "import('./build/whmcs-client.js').then(async ({WHMCSClient}) => { ... })"

Requirements

• Node.js >= 18
• WHMCS account with API enabled
• WHMCS API Identifier and Secret
• IP authorized in the WHMCS API

Project Status

• 34 MCP tools implemented and tested
• Complete TypeScript client
• Tested in production with real data
• Full coverage of main WHMCS endpoints

Completed Implementations

Tickets and Support (8 tools)

• GetTickets, GetTicket, GetTicketCounts
• OpenTicket, AddTicketReply, UpdateTicket
• GetSupportDepartments, GetSupportStatuses

Clients (6 tools)

• GetClients, GetClientsDetails
• GetClientsProducts, GetClientsDomains
• GetContacts, GetEmails

Products and Sales (3 tools)

• GetProducts, GetOrders, GetInvoices

System and Admin (5 tools)

• GetActivityLog (116k+ entries tested)
• GetStats (revenue, orders, tickets)
• GetCurrencies, GetPaymentMethods
• GetAdminUsers

Combined Invoices (2 tools)

• GetUnpaidInvoicesDetailed, GetAllUnpaidInvoicesComplete

Billing Analysis (2 tools)

• FindInvoiceGaps, ListClientsWithPendingInvoices

Service Management (4 tools)

• ModuleSuspend, ModuleUnsuspend, ModuleTerminate, ModuleCreate

Order Management (4 tools)

• AcceptOrder, CancelOrder, DeleteOrder, PendingOrder

License

MIT

Author

Built for WHMCS integration via Model Context Protocol.