# How to Vibe Code Your Own Lemon Squeezy (and Stop Paying for It)

> Payments, tax & subscriptions for software companies

- Site: https://lemonsqueezy.com
- Category: Payments & Merchant of Record
- Verdict: **Serious undertaking** (42/100 vibecodeable)
- Estimated effort: 4-6 weeks of part-time work

## Verdict

Build a personal sandbox subset for billing and license management, but keep paying a real platform if you want actual global tax compliance.

You can easily build a CRUD dashboard, a product catalog, and a Stripe payment wrapper using AI coding agents. However, attempting to clone Lemon Squeezy as a true Merchant of Record is a severe trap: no amount of generated code can solve the legal liability, local tax registration, cross-border VAT collection, and multi-jurisdictional remittance required to act as an MoR. For a personal-use sandbox to manage your own side project checkouts, you can build a lightweight subset of the store builder and license key generator.

### What you can't replicate

- Legal status as a Merchant of Record
- Global tax registration and remittance in 135+ jurisdictions
- Stripe-level fraud prevention networks and PCI-DSS Level 1 infrastructure

## What it does

An all-in-one e-commerce, billing, and Merchant of Record platform tailored specifically for software companies and digital creators.

### Core features

- Hosted checkout web pages and drop-in checkout overlay widgets
- Merchant dashboard web app for products, orders, and customers
- Subscription management with recurring billing and intervals
- License key generation, activation, and revocation system
- Customer self-service portal for subscriptions and invoices
- Discount codes and coupon management
- Webhook dispatching system for asynchronous events
- Basic online storefront builder capability

## The business

### Pricing

- E-commerce & Payments: 5% + $0.50 — Per successful transaction with $0 monthly base fee.

Founded 2020.
Team size: 10-15.

## The hard parts

- Merchant of Record (MoR) legal liability and global sales tax compliance across 135+ countries
- PCI-DSS Level 1 compliance and real-time AI behavioral fraud detection
- Complex ledger accounting, multi-currency conversion, and payout reconciliations
- Robust subscription dunning, failed payment recovery, and proration state machines

## How to vibe code Lemon Squeezy

### Prerequisites

- Node.js (free): Required runtime for executing the Next.js framework and build toolchain.
- GitHub (free): Source control repository and deployment integration for Vercel.
- Stripe Account (free): Test-mode payment gateway integration for processing test checkouts.

### Recommended AI tools

- Claude Code: Best-in-class terminal coding agent for scaffolding multi-file SaaS architectures, database schemas, and API routes.
- Cursor: AI code editor ideal for refining frontend checkout overlays, modals, and dashboard views with tight visual feedback.

### Stack

- Frontend: Next.js with Tailwind CSS and shadcn/ui components
- Backend: Next.js Server Actions and API Routes
- Database: Neon (Serverless Postgres)
- Auth: better-auth
- Payments: Stripe
- Other: Resend for transactional email notifications and receipts, PostHog for product and event analytics

### Hosting

- Vercel (Hosting the Next.js merchant dashboard, hosted checkouts, and API endpoints): $0/mo (Hobby Tier)
- Neon (Storing products, customers, orders, subscriptions, and license keys in serverless Postgres): $0/mo (Free Tier)

### Build guide

1. **Project Scaffolding & Database Schema** — Initialize the Next.js project with Tailwind CSS, configure better-auth, and set up the core relational database schema in Neon for merchants, products, prices, orders, subscriptions, and license keys.

```
Scrape together a new Next.js project using App Router, TypeScript, and Tailwind CSS. Install shadcn/ui primitives. Set up better-auth with email/password authentication connected to a Neon PostgreSQL database via Prisma or Drizzle ORM. Create database migrations for the core models: Merchants (id, name, email, stripe_account_id), Products (id, merchant_id, name, description, price, recurring_interval, is_subscription), Customers (id, email, name, created_at), Orders (id, merchant_id, customer_id, product_id, amount, status, created_at), Subscriptions (id, merchant_id, customer_id, product_id, status, current_period_end), and LicenseKeys (id, order_id, key_string, status, activations_count). Write robust migration files and verify database connection success locally using environment variables.
```

2. **Merchant Dashboard & Product Management** — Build the merchant dashboard interface allowing creators to create products, set pricing variants (one-time or recurring), generate embeddable checkout links, and view high-level revenue reporting.

```
Build a responsive merchant dashboard in Next.js App Router under the `/dashboard` route group. Create pages for viewing revenue metrics (MRR, total sales, order count) and managing products. Implement a product creation form that allows merchants to specify name, description, price, currency, and billing type (one-time vs recurring monthly/yearly). Store products in the Neon database. Add a product detail view that generates shareable hosted checkout URLs (`/checkout/[productId]`) and embeddable JavaScript overlay snippet codes for customers to place on external websites. Ensure clean styling using Tailwind CSS and shadcn/ui table and card components.
```

3. **Hosted Checkouts & Stripe Integration** — Implement the public hosted checkout page and checkout overlay modal that collects customer details, integrates with Stripe Checkout test mode, and processes payments securely.

```
Build a public hosted checkout page at `/checkout/[productId]` that fetches product details and renders a clean purchasing form for buyers. Integrate Stripe Checkout session creation via a server action when the buyer clicks 'Buy Now', passing metadata for merchant, product, and customer email. Implement a Stripe webhook handler endpoint at `/api/webhooks/stripe` to listen for `checkout.session.completed` and `invoice.payment_succeeded` events. Upon successful payment verification in the webhook handler, programmatically record the order in the database, generate a unique software license key string, and trigger a background function to record customer purchase history.
```

4. **License Key Management & Verification API** — Develop the automated license key generation workflow upon purchase and provide a secure REST API endpoint for desktop and web software to activate, validate, and revoke license keys.

```
Implement an automated license key generation utility that creates secure formatted strings (e.g., `XXXX-XXXX-XXXX-XXXX`) upon every successful order fulfillment. Display generated license keys to the buyer on the order success screen and send them via email. Build a developer-facing REST API endpoint at `/api/v1/licenses/activate` and `/api/v1/licenses/validate` that accepts a license key and an instance identifier, verifies activation limits against the database, and returns JSON success/error responses. Include UI views in the merchant dashboard for inspecting issued license keys, viewing activation counts, and manually revoking keys.
```

5. **Customer Portal & Subscription Management** — Create a self-service customer portal where buyers can view their active subscriptions, download receipts, access license keys, and update payment methods.

```
Build a secure customer portal accessible via magic link or customer login at `/portal`. Allow customers to view their active and past purchases, download PDF-style receipts, copy their issued software license keys, and manage active subscriptions. Implement subscription cancellation and plan upgrade/downgrade handlers that communicate with Stripe billing APIs and update local subscription statuses in the Neon database. Test the end-to-end flow from checkout to customer portal management.
```

### Cost vs paying

**Starting costs (one-time):**

- Custom domain for store links: $12 one-time
- AI coding tool subscription: $20 one-time
- Total: ~$32 one-time

**Ongoing costs (monthly):**

- Vercel Hobby Hosting: $0/mo
- Neon Serverless Postgres: $0/mo
- Total: $0/mo

- Paying for the SaaS instead: $0/mo base (5% + $0.50 per transaction)
- Build time: 40-60 hours
- AI tool credits: $20 (Claude Pro / Cursor Pro)
- Break-even: N/A (Personal sandbox clone)

## Sources

- [Lemon Squeezy Homepage & Feature Pages](https://www.lemonsqueezy.com)
- [PitchBook - Lemon Squeezy Company Profile](https://pitchbook.com)
- [Crunchbase - Stripe Acquisitions History](https://www.crunchbase.com)