PayPal Business API
PayPal runs a fully self-serve developer platform at developer.paypal.com: sandbox credentials on signup, OAuth 2.0, and REST APIs for orders, payments, subscriptions, invoicing, disputes, and payouts. Webhooks cover the full event stream, up to 10 listener URLs per app.
Frequently asked questions
PayPal Business scores A on the API Report Card. PayPal runs a fully self-serve developer platform at developer.paypal.com: sandbox credentials on signup, OAuth 2.0, and REST APIs for orders, payments, subscriptions, invoicing, disputes, and payouts. Webhooks cover the full event stream, up to 10 listener URLs per app.
PayPal Business has a workable official integration path. Most engineering teams can build against it directly. Open API: self-serve, documented, with SDKs
PayPal Holdings, Inc. (NASDAQ: PYPL) is a San Jose-headquartered global payments company founded in 1998 (originally Confinity, merged with X.com in 2000) and spun out from eBay in 2015.
Vertical: Financial Services / Merchant Payments and Payment Processing. Accepting PayPal Wallet, Pay Later (BNPL), Venmo, and credit/debit card payments via Standard or Advanced Checkout buttons embedded on a merchant site.
Extremely high. PayPal is one of the two or three most recognized consumer payment brands globally (alongside Visa/Mastercard), and on the merchant side it is universally listed as a top-5 payment processor alongside Stripe, Adyen, Square, and Worldpay/FIS.
Merchant balance, available vs pending, holds, reserves, and FX-converted sub-balances. Transactions: orders, authorizations, captures, refunds, partial refunds, voids, with associated payer info, shipping address, line items.
Founded in 1998; ~28 years old as of 2026.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.