Checkout with Paddle for WooCommerce

Coding standards and the release checklist.

What the plugin deliberately does not do, and why.

The license client, updates, and how Pro takes over from the free version.

AJAX, admin-post and query endpoints, and the checkout scripts.

Sandbox, tunnels for webhooks, logging, simulated webhooks and mocks.

Order, subscription and user meta, options, transients, scheduled actions and uninstall.

Filters and actions the plugin provides, with examples, and the hooks it uses.

How invoice and receipt links are added to pages and emails.

How refunds travel between WooCommerce and Paddle, and how chargebacks are handled.

Linking, status mapping, renewal orders, the delayed link check and restrictions.

The endpoint, signature checks, Billing events, Classic alerts and multi-store tagging.

Locks, fresh reads, markers, order completion, renewals and the refund ledger.

Design principles, compatibility, files, boot sequence, drivers, API clients, gateway and blocks.

The settings option, every key, and the helpers to read them.

Order lines, the three checkout entry points, subscriptions, Billing transactions, Classic pay links and payment confirmation.

Architecture, checkout and webhook flows, stored data, safety mechanisms, hooks and local testing.