Talktodre-ops

payment

Talktodre-ops/claude-skills/payment/SKILL.md

Integrating Paddle Billing (a Merchant of Record) into a SaaS backend the reliable way, distilled from a real FastAPI + Celery + React system. Load when building, changing, or debugging anything money-related: checkout, subscriptions, one-off/credit purchases, webhook ingestion, invoices/transactions, entitlement gating from plan state, dunning/failed payments, refunds, revenue/MRR, or the reconciliation and dead-letter machinery. Covers the architecture (webhooks as source of truth, an inbox/outbox pipeline on a task queue), the data model, the end-to-end flows, the exact Paddle event + signature details, the edge cases (ordering, duplicates, retries, slow networks, currency), and the tradeoffs. Stack-agnostic in principle; examples use FastAPI + Celery + Redis + Postgres + a React frontend.

• Reads credentials