PicPay Gateway Checkout API
Unified payment gateway API for accepting credit cards, PIX, and the PicPay wallet through transparent, standard, or lightbox checkout flows. Exposes charges, charge cancellation, card vault storage, card validation, 3DS authentication, recurring payments, and BIN lookup. Authenticated with OAuth 2.0 client_credentials bearer JWTs minted at api.picpay.com/oauth2/token.