Stripe Has a Free API: The Payment Infrastructure That Powers the Internet

Every 4th online purchase you make probably goes through Stripe. And their API is one of the best-documented, most developer-friendly APIs ever built. What Makes Stripe's API Special? Stripe's API isn't just a payment gateway. It's a complete financial infrastructure: Payments — cards, wallets, bank transfers, crypto Subscriptions — recurring billing with trials, prorations, usage-based pricing Connect — marketplace payments, split payments, platform fees Invoicing — automated invoice generation and collection Identity — KYC verification Tax — automatic tax calculation for 50+ countries And the free tier is generous: you only pay per transaction (2.9% + 30¢), not for API access. The API in Action # Create a payment intent curl https://api.stripe.com/v1/payment_intents \ -u sk_test_your_key: \ -d amount = 2000 \ -d currency = usd \ -d "payment_method_types[]" = card # Create a customer curl https://api.stripe.com/v1/customers \ -u sk_test_your_key: \ -d email = "customer@example.com" #