MarketplacePolar
Polar
Developer-native merchant of record with usage billing & great DX.
OfficialBilling & paymentsGenerally available
Overview
Polar is a developer-native merchant of record with first-class usage-based billing and an open-source heart. It is built for teams selling to developers — clean APIs, metered usage, and digital benefits — while still handling tax as the seller of record.
CashSDK maps Polar orders, subscriptions, and metered usage into your unified ledger, so consumption-based revenue lines up next to seat-based and in-app revenue.
CashSDK
Syncs & settles
Polar
catalog.syncedsubscription.activecharge.settledentitlement.granted
What you can do
Usage-based billing
Meter and bill on consumption, then reconcile that usage revenue in CashSDK analytics.
Merchant of record
Polar sells as the merchant of record and handles international sales tax and VAT.
Digital products & benefits
License keys, downloads, and gated benefits map straight to entitlements.
Developer-first API
A modern, well-documented API that pairs naturally with an agent-built stack.
How it works
- 1
Connect your account
Add Polar from the CashSDK dashboard — credentials are stored encrypted, never in your app binary.
- 2
Sync your catalog
Products, prices, and entitlements map between Polar and CashSDK, so a purchase resolves to the same entitlement everywhere.
- 3
Reconcile in one ledger
Polar charges settle into a single revenue view alongside the App Store and Google Play — one source of truth for MRR, churn, and tax.
Settle Polar into one revenue ledger.
Start free, integrated by your coding agent in under an hour. Your revenue data is yours: export anytime, never sold.