How does Stripe Metered Subscriptions work?

Stripe lets you report usage on a subscription via API. Each night (or in real-time), the metered usage gets sent to Stripe. At the period end, Stripe bills the customer for base + overage. Webtwizz scaffolds the reporter and the webhook handlers.

How do I prevent abuse / overrun on free tier?

Server-side enforcement only. Every billable action checks the user's current usage before running. At cap, return 429 with an upgrade prompt. Optional: rate-limit by IP for unauth'd endpoints.

What about real-time usage display?

Maintain a counter in your DB updated on every action. The dashboard reads it directly. For high-throughput products, batch increments to Redis and flush to Postgres every minute. Webtwizz scaffolds either pattern.

How do I migrate existing customers to a new pricing model?

Run grandfathered plans alongside new ones. Old customers stay on their plan; new signups go to new plans. A "migrate to new pricing" CTA in-app lets willing customers move. Stripe supports plan migration at the next renewal.

Build a Usage-Based SaaS with AI

Stripe metered billing + per-user quotas + real-time usage display. Skip the metering-as-a-service tax (Metronome, Orb, Lago all charge per event).

Webtwizz AI Full-Stack Builder Interface Preview

Events meterable on basic Stripe

Metering + caps + alerts wired

Metering-vendor fees

Pricing experiment freedom

01 / What you get

Usage-Based SaaS, generated.

Click Generate from the box above. Real Next.js code, real database, real integrations - not a sandbox. Each piece below ships in the first prompt.

Per-user usage counter, incremented atomically on every billable action

Plan caps enforced server-side (free: 1k/mo, pro: 50k/mo, team: 500k/mo)

Stripe Metered Subscriptions: usage reported to Stripe nightly, overage billed automatically

In-app usage dashboard: today / this period / projected month-end

Alerts at 80% / 100% of cap so users upgrade before being cut off

The same shape becomes

3 variants you can ship.

Per-API-call SaaS

Each request is a billable event. Rate-limit by plan. Standard for dev tools.

Per-active-resource

Bill by rows stored, GBs hosted, machines running. Common for infra products.

Per-AI-generation

Each model call is metered. Tokens, images, videos. Pricing matches model cost.

Pixel-perfect control over every detail

Fine-tune typography, colors, spacing, and layouts with precision. See changes instantly as you design.

Built-in content and data

Manage your content directly in the builder, or connect a database for dynamic data like products, blog posts, and user accounts. No technical setup needed.

AI that actually builds

Describe what you want and watch it come to life. The AI creates pages, adds features, fixes issues, and refines your app through natural conversation.

Layers panel

See your entire page structure at a glance. Select, reorder, and nest elements with drag and drop precision.

Custom components

Build once, reuse everywhere. Create your own components and drop them into any page instantly.

Pages panel

Manage all your pages in one place. Add, duplicate, and organize your site structure effortlessly.

For people who hate $99-per-seat tools.

→AI SaaS founders metering tokens or generations

→API-first products charging per call

→Infra products billing per active resource (rows, GBs, runtime)

Powerful integrations

Payments, database, AI, email, analytics. Wired up the moment you click connect.

Stripe

Payments

Supabase

Database & Auth

OpenAI

AI · GPT

Anthropic

AI · Claude

Resend

PostHog

Analytics

Sentry

Errors

Suggest an integration

Why generate it instead of buying it.

“

Metering SaaS (Stigg, Metronome, Orb) charges per event metered. At 1M events a month that's real money for billing infrastructure you can ship in an afternoon.

“

Pricing experiments are fast: change a plan limit or rate, ship in a prompt. With a metering vendor, every change goes through their UI and may require sales support.

Head-to-heads: vs Lovable · vs Bolt · vs v0 · vs Replit

Frequently Asked Questions

More saas apps you can ship.

SaaS with Subscription Billing

Login, Stripe Checkout, plan limits, customer portal - the four pieces every paid SaaS needs, generated and wired up. Skip the boilerplate, ship the actual product.

AI SaaS App

AI features + paid tiers + token tracking. The four pieces every AI SaaS needs, generated in a couple hours instead of a couple weeks.