Kill Bill is an open-source subscription billing and payments platform.
Fully extensible, you can build your business logic on top of it for a customized billing and payments solution.
Kill Bill has an MCP server now, the one we ship runs on your machine.
Overview Here's a prompt one of us typed into Claude Code a few days ago, against a real Kill Bill QA environment: Four steps, in English, with no API calls written by hand: i/ Create a...
Real-Time Usage Rating with Aviate — Any Event, Any Price, Any Business Model
The Problem We're Solving The world is full of businesses that need to charge for what customers actually use — minutes parked, gigabytes transferred, API calls made, kilowatt-hours...
Keeping Your Billing Platform Healthy: Introducing Aviate Health Monitoring
The Challenge of Monitoring a Billing Platform Monitoring a billing platform in production is different from running most other software systems: Standard observability tools —...
Two Days in Miami with ChaChing: Making Enterprise Billing Accessible
Over the past few years, we’ve had the chance to work closely with the team at ChaChing. It’s one of those collaborations that grew naturally over time through technical conversations,...
Announcing Kaui 4: Faster, Smarter, and Built for Enterprise-Scale Billing
Kaui 4 is here. As one of the Kill Bill cofounders, this release feels personal. Kaui has been part of Kill Bill’s identity almost from the beginning. Long before Kill Bill became the...
AI Usage Billing Made Simple with Kill Bill and Aviate
AI-based products introduce new billing challenges. Whether selling token usage, inference time, or API calls, providers must manage metering, prepaid credits, invoicing, and payments —...
Introducing the OSGI-Based Kafka Consumer Plugin for Kill Bill
This is a guest post by Prashant Kumar, Software Engineer at Cashfree Payments. In modern payment processing systems, managing high-throughput transaction requests efficiently is crucial....
Introducing the Hyperswitch Plugin for Kill Bill
This is a guest post by Chikke Srujan, Product Engineer at Juspay. In today's digital marketplace, seamless payment processing is paramount for any business. Enter Hyperswitch, a robust,...
Kill Bill Release 0.24: Includes Support for Java 11
We recently released Kill Bill version 0.24. We're using this blog post to discuss the more notable changes for Kill Bill 0.24: Support for Java 11 Group subscriptions on specific...
How Kill Bill Handles Coupons, Discounts, and Price Overrides
The holidays can put quite the squeeze on one's wallet, what with buying gifts, traveling, and entertaining friends and family. It's a natural time of the year to offer your customers a...