No, the REST APIs are currently available only to PayPal accounts.
How do I create REST API credentials?
How do I integrate PayPal REST with Angell EYE for WooCommerce?
How do I whitelist my server’s IP address so it can access PayPal APIs?
How do I get started with PayPal APIs and SDKs?
How do I avoid duplicate transactions?
Where can I find a glossary of PayPal technical terms?