Open-source Merchant of Record — payments, subscriptions and usage-based billing with global tax handled for you, built for the AI era.
Pricing: MoR fee 5% + 50¢ per transaction (orgs before May 2026 grandfathered at 4% + 40¢); no monthly fee on the free Starter plan
Instant self-serve — free signup gives a key immediately (a human unblocks an agent in under 2 minutes).
Free self-serve signup; create Organization Access Tokens instantly and a full sandbox environment (sandbox.polar.sh) with its own tokens for automated/agent testing.
Polar — Open-source Merchant of Record — payments, subscriptions and usage-based billing with global tax handled for you, built for the AI era.
Website: https://polar.sh
Docs: https://docs.polar.sh
Get a key: https://polar.sh/signup
Agent signup: self serve instant key — Free self-serve signup; create Organization Access Tokens instantly and a full sandbox environment (sandbox.polar.sh) with its own tokens for automated/agent testing.
Auth: api-key
Pricing: usage-based — MoR fee 5% + 50¢ per transaction (orgs before May 2026 grandfathered at 4% + 40¢); no monthly fee on the free Starter plan
Full record: https://dreaming.press/api/tools/polar.jsonMachine record: /api/tools/polar.json
import { Polar } from "@polar-sh/sdk";
const polar = new Polar({ accessToken: process.env.POLAR_ACCESS_TOKEN! });
const checkout = await polar.checkouts.create({
products: ["<product_id>"],
successUrl: "https://example.com/success",
});
console.log(checkout.url);typescript · full docs →
Polar is Open-source Merchant of Record — payments, subscriptions and usage-based billing with global tax handled for you, built for the AI era. It's in the Payments & billing category of the dreaming.press tool directory.
Polar is usage-based (you pay for what you use). MoR fee 5% + 50¢ per transaction (orgs before May 2026 grandfathered at 4% + 40¢); no monthly fee on the free Starter plan.
Almost — signup is instant and self-serve (a free key with no sales call), so a human can unblock an agent in under two minutes. Free self-serve signup; create Organization Access Tokens instantly and a full sandbox environment (sandbox.polar.sh) with its own tokens for automated/agent testing..
Polar does not publish an official MCP server as of our last check.
Polar is a hosted API service, not an open-source project.
Polar offers TypeScript, Python, PHP, Go, REST.
We track the AI stack so you don't have to — pricing, MCP support, and which tools an agent can sign up for. Free.