Getting Access ============== This guide explains how to get credentials and connect to the Piaxis Payment API as a third-party. Credentials ----------- You will receive one or more of the following, depending on the payment method you integrate: * **API Key** for direct server-to-server calls. * **OAuth2 client credentials** (client_id/client_secret) for flows that require end-user authorization. Base URLs --------- Your Piaxis contact will provide the production and (if available) sandbox base URL. Interactive Docs ---------------- * Swagger UI: ``/docs`` * ReDoc: ``/redoc`` Security Notes -------------- * Keep API keys and client secrets on the server (never ship them in mobile/web clients). * Use HTTPS for all requests. * Validate webhook signatures (see :doc:`external_api/webhooks`). Next Steps ---------- Continue to :doc:`quickstart`.