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polar

Apps & Automation
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Polar payment platform integration for monetization, subscriptions, and license keys. Use when implementing checkout, managing products, or building customer portals.

QUICK START

How to use this skill

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/business/polar/SKILL.md

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Polar Integration

Polar is a merchant-of-record platform for digital products, subscriptions, and license keys.

What I Do

  • Guide implementation of Polar checkout and payments
  • Help with subscription management and billing
  • Assist with license key validation
  • Set up webhook handlers for payment events

When to Use Me

  • Implementing checkout flow for a product
  • Adding subscription billing to an app
  • Setting up license key validation
  • Building a customer portal
  • Handling payment webhooks

Quick Start

npm install @polar-sh/sdk

import { Polar } from "@polar-sh/sdk";

const polar = new Polar({
  accessToken: process.env.POLAR_ACCESS_TOKEN!,
  server: "production", // or "sandbox"
});

Key APIs

APIPurpose
polar.products.*Create/manage products and prices
polar.checkouts.*Create checkout sessions
polar.subscriptions.*Manage subscriptions
polar.orders.*View order history
polar.customers.*Customer management
polar.licenseKeys.*Issue and validate licenses

Environment Variables

VariableDescription
POLAR_ACCESS_TOKENOrganization Access Token (OAT)
POLAR_WEBHOOK_SECRETWebhook signing secret

Common Patterns

Create Checkout

const checkout = await polar.checkouts.create({
  productId: "prod_xxx",
  successUrl: "https://myapp.com/success",
});
// Redirect to checkout.url

Validate License Key

const result = await polar.licenseKeys.validate({
  key: "XXXX-XXXX-XXXX-XXXX",
  organizationId: "org_xxx",
});

Handle Webhook

import { validateEvent } from "@polar-sh/sdk/webhooks";

const event = validateEvent(body, signature, process.env.POLAR_WEBHOOK_SECRET!);
// event.type: "subscription.created", "order.created", etc.

Links