> For the complete documentation index, see [llms.txt](https://docs.toomuchmedia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.toomuchmedia.com/api/api-endpoints/biller.md).

# biller

This collection manages the integration layer between the platform and third-party payment gateways (like Epoch, CCBill, Segpay, etc.). Endpoints allow administrators to configure biller credentials, set up cascading billing rules, toggle specific payment methods, and manage postback/webhook settings required for the billers to communicate successful transactions back to the system.