PracBill’s REST API runs to 161 endpoints covering customers, services, invoices, bill runs, CDRs, provisioning and the helpdesk. If you already have systems, you can drive billing from them rather than working in two places. The full API reference is public.

Things our customers have built on it:

• Display sales data in their own dashboards
• Monitor aged receivables
• Import invoice data into third-party debt management systems
• Monitor CDR and call volumes
• Push new account and service data straight into PracBill from in-house systems
• Integrate with their debt collection agencies
• Import billing data into a data warehouse
• Integrate with a custom CRM

API access comes with the Pro and Enterprise plans. If you want to know whether something specific is possible, the reference is public and the endpoints are documented.