Can I use this for usage-based billing?

Yes, it provides patterns for processing usage-based charges, allowing you to calculate invoices based on metered consumption rather than just flat fees.

How does this skill handle failed payments?

The skill includes specialized dunning management logic that automates retry schedules, grace periods, and customer notifications to recover failed transactions.

Does it support international tax compliance?

It includes a flexible tax calculation framework designed to handle various jurisdictions, including VAT for Europe, GST for Australia, and Sales Tax for the US.

How are plan upgrades handled mid-month?

The skill provides a Proration Calculator that automatically determines the unused credit from the old plan and the additional charge for the new plan based on the remaining days in the cycle.

Billing & Subscription Automation

Name: Billing & Subscription Automation
Author: anton-abyzov

byanton-abyzov

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E-commerce Solutions

Builds robust, production-grade billing systems for recurring payments, invoicing, and subscription lifecycle management.

This skill empowers developers to implement comprehensive billing infrastructures using Claude Code. It provides standardized patterns and logic for managing the entire subscription lifecycle, from initial trials and active renewals to complex scenarios like dunning management, prorated plan changes, and regional tax calculations. Whether you are building a SaaS platform or a usage-based service, this skill offers the blueprints for handling payment recovery, invoice generation, and automated billing cycles efficiently.

Key Features

01Usage-Based and Recurring Interval Billing Patterns

02Subscription Lifecycle Management (Trial, Active, Past Due, Canceled)

03Multi-Regional Tax Calculation (VAT, GST, and Sales Tax)

0413 GitHub stars

05Automated Dunning & Payment Recovery Workflows

06Proration Logic for Mid-Cycle Upgrades and Downgrades

Use Cases

01Calculating complex prorated charges and credits during seat-based plan changes

02Automating failed payment retries and customer notification sequences

03Implementing SaaS subscription tiers with monthly or annual billing intervals

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add anton-abyzov/specweave billing-automation

For use in Claude.ai and ChatGPT

Download Skill