$29 paid Node source kit
Signed Stripe invoice webhooks with review-ready tax metadata.
Add duplicate-safe invoice event handling, metadata capture, customer tax fields, and receipt review records around an existing Stripe Billing app without replacing your checkout flow.
Webhook receiver
Signed Stripe event verification, invoice event routing, and duplicate-event suppression for retry-heavy billing webhooks.
Tax metadata records
Customer tax ID fields, invoice metadata snapshots, receipt review data, and audit-friendly JSON outputs.
Buyer checks
Package docs, tests, and npm run smoke:buyer so a buyer can verify the important flow before adapting it.
What this is not
This is not managed software and not professional tax guidance. It is the live Stripe Invoice Tax Kit source package routed through Gumroad, meant for teams that want concrete Node code they can inspect, run, and adapt.