What is ParityEdge and what does it do?

ParityEdge is a sub-10ms edge Purchasing Power Parity (PPP) localization platform and developer SDK. It converts global SaaS pricing into regional discounts across 190+ countries, injects coupons into Stripe and Lemon Squeezy checkouts, and renders isolated Shadow DOM banners with near-zero layout shift (<0.01 CLS).

How do I install the parityedge npm package?

You can install the official parityedge package via npm by running `npm install parityedge` (or `pnpm add parityedge`, `yarn add parityedge`). It has zero third-party runtime dependencies and is under 3 kB gzipped.

How does ParityEdge prevent VPN abuse on discounted pricing?

ParityEdge inspects incoming Autonomous System Numbers (ASNs) at the edge against a comprehensive threat database of 500+ commercial datacenter and proxy providers (such as AWS, Google Cloud, DigitalOcean, Hetzner). Datacenter and VPN visitors are automatically served standard base pricing to stop geographic arbitrage.

How do I use ParityEdge with React and Next.js 15?

After installing `parityedge`, import the React hook and banner component: `import { useParityEdge, ParityBanner } from "parityedge/react";`. It provides zero-flicker SSR hydration and automatic price mutation.

How does ParityEdge automatically apply coupons to Stripe Payment Links?

ParityEdge scans the client DOM for links containing `buy.stripe.com` and appends the URL query parameter `?prefilled_promo_code=COUPON`. When clicked, the buyer arrives at Stripe checkout with their discount already applied.

Does ParityEdge support Lemon Squeezy?

Yes. ParityEdge supports Stripe Payment Links (via `?prefilled_promo_code=...`) and Lemon Squeezy (via `?checkout[discount_code]=...`). Custom checkout handlers can also be wired via the SDK callback API.

Payment Integration

Stripe Payment Links & Lemon Squeezy Automation

Q: How do I install the parityedge npm package?

You can install the official parityedge package via npm by running `npm install parityedge` (or `pnpm add parityedge`, `yarn add parityedge`). It has zero third-party runtime dependencies and is under 3 kB gzipped.

Q: How does ParityEdge prevent VPN abuse on discounted pricing?

ParityEdge inspects incoming Autonomous System Numbers (ASNs) at the edge against a comprehensive threat database of 500+ commercial datacenter and proxy providers (such as AWS, Google Cloud, DigitalOcean, Hetzner). Datacenter and VPN visitors are automatically served standard base pricing to stop geographic arbitrage.

Q: How do I use ParityEdge with React and Next.js 15?

After installing `parityedge`, import the React hook and banner component: `import { useParityEdge, ParityBanner } from "parityedge/react";`. It provides zero-flicker SSR hydration and automatic price mutation.

ParityEdge automatically detects checkout links on your website and appends prefilled promotion codes at the DOM level without modifying your payment backend.

Free Stripe Coupon Generator: Generate your Stripe CLI and API coupon commands instantly for all parity tiers.

Open Generator

Automatic Link Mutation Workflow

Stripe Payment Link Discount Injection Flow

In-Situ URL InterceptionStripe Payment Links + Lemon Squeezy

Stripe Payment Links (`buy.stripe.com`)

When ParityEdge detects an eligible visitor, it mutates any link containing buy.stripe.com to include the prefilled_promo_code query parameter:

Original Link in your HTML:https://buy.stripe.com/abc123xyz

Auto-Mutated by ParityEdge:https://buy.stripe.com/abc123xyz?prefilled_promo_code=PARITY50

Lemon Squeezy Checkouts

For Lemon Squeezy checkout URLs, ParityEdge automatically injects checkout[discount_code]:

https://yourstore.lemonsqueezy.com/checkout/buy/prod_123?checkout[discount_code]=PARITY50

Setting up Coupons in Stripe

Open your Stripe Dashboard → Product catalog → Coupons.
Create coupons matching your ParityEdge tier codes (e.g. PARITY30 with 30% off, PARITY50 with 50% off).
Check "Allow promotion codes" in your Stripe Payment Link configuration.

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