# Rest API v0

### 🔄 **REST API v2 – Recommended Upgrade**

**We've just released REST API v2 with significant improvements** to provide a better integration experience for developers:

* **New resource support: Bandwidth**
* **Redesigned structure** for easier integration and improved developer experience
* **More comprehensive features** to better support your use cases
* **Flexible payment options**: support for both **signed transactions** and **internal account** payments

👉 If you're currently using v0, consider upgrading to v2 to take full advantage of these enhancements.

### [Buy Resources version 2](https://docs.tronsave.io/developer/buy-resources-v2)

### [Extend Orders version 2](https://docs.tronsave.io/developer/extend-orders-v2)