Erpnext

This connects Claude to ERPNext, the open-source ERP system used by small to medium businesses for accounting, manufacturing, and CRM. You get actions for managing customers, items, sales orders, invoices, purchase orders, suppliers, leads, and employees. It runs through Membrane's CLI, which handles auth and credential refresh automatically. You can search for actions with natural language, run them with JSON parameters, or proxy requests directly to the ERPNext API when the pre-built actions don't cover your case. The generic document actions let you work with any DocType in the system. Solid choice if you're building agents that need to read or write business data in ERPNext without dealing with API credentials yourself.