# Public API

- [Authorization](/public-api/authorization.md)
- [Signature Examples](/public-api/authorization/signature-examples.md)
- [Endpoints](/public-api/endpoints.md)
- [Merchant](/public-api/endpoints/merchant.md)
- [Basic crypto operations](/public-api/endpoints/basic-crypto-operations.md)
- [Crypto Invoices](/public-api/endpoints/crypto-invoices.md)
- [Basic Fiat Operations](/public-api/endpoints/basic-fiat-operations.md)
- [Fiat Invoices](/public-api/endpoints/fiat-invoices.md)
- [Exchange](/public-api/endpoints/exchange.md)
- [Exchange + Withdrawal](/public-api/endpoints/exchange-+-withdrawal.md)
- [Notifications](/public-api/notifications.md)
- [Crypto Callbacks](/public-api/notifications/crypto-callbacks.md): Check out the IPN examples for cryptocurrency operations
- [Fiat Callbacks](/public-api/notifications/fiat-callbacks.md)
- [Exchange Callbacks](/public-api/notifications/exchange-callbacks.md)
- [JS/TS SDK](/public-api/js-ts-sdk.md)
- [Getting started](/public-api/js-ts-sdk/getting-started.md): Node.js 0xPay integration package
- [Processing WebHook Notifications](/public-api/js-ts-sdk/processing-webhook-notifications.md)
- [Reference](/public-api/js-ts-sdk/reference.md): 0xPay API SDK with methods and utilities