Metered API Launch Kit
API keys, monthly quotas, usage logs, protected routes, and checkout-backed access issuance.
Usage-based billing source kits
Stripe usage-based billing kits for Node SaaS.
Pick a paid source kit for API quota enforcement, usage warnings, revenue snapshots, invoice tax review, or cancellation handling. Each product is an adapt-it-yourself source kit, not a hosted integration.
Usage Based Billing Buying Matrix
| Buyer need | Best kit | Checkout |
|---|---|---|
| Gate API access by key, enforce monthly quotas, and record usage events. | Metered API Launch Kit | $29 on Gumroad |
| Send warnings when accounts approach plan limits or invoice-impacting thresholds. | Stripe Usage Alerts Kit | $29 on Gumroad |
| Roll subscription and invoice events into recurring revenue snapshots. | Stripe MRR Analytics Kit | $29 on Gumroad |
| Review invoice tax metadata before receipts and reporting workflows depend on it. | Stripe Invoice Tax Kit | $29 on Gumroad |
| Capture cancellation reasons and save-offer outcomes around subscription churn. | Stripe Cancel Save Kit | $29 on Gumroad |
Core Product Paths
Stripe Usage Alerts Kit
Usage thresholds, notification events, billing-limit summaries, and idempotent webhook handling.
Stripe MRR Analytics Kit
Recurring revenue snapshots, paid invoice tracking, refunds, and churn metrics from Stripe events.
Buyer Notes
- Each product is an adapt-it-yourself source kit for developers.
- Buyers still configure Stripe products, prices, webhook endpoints, environment variables, persistence, and hosting.
- For a nearby buying query, use the Stripe metered billing source kits page.