> For the complete documentation index, see [llms.txt](https://unibaseio.gitbook.io/unibase-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://unibaseio.gitbook.io/unibase-docs/unibase-pay/api-reference.md).

# API Reference

### Base URL

* **V2 (recommended):** `https://api.x402.unibase.com/v2`
* **V1:** `https://api.x402.unibase.com/v1`

### Supported Networks

* BSC mainnet
* BSC testnet

### Endpoints

| Method | Endpoint     | Description                    |
| ------ | ------------ | ------------------------------ |
| GET    | `/verify`    | Verify payment                 |
| POST   | `/verify`    | Verify payment                 |
| GET    | `/settle`    | Settle payment                 |
| POST   | `/settle`    | Settle payment                 |
| GET    | `/health`    | Health check                   |
| GET    | `/supported` | Supported networks and schemes |

### Payment Schemes

* **exact** — Supported on both V1 and V2

### Supported Assets (V2)

* All ERC20 tokens via Permit2
* EIP-3009 assets

### Permit2 Proxy (BNB Chain)

```
0x98D0E9d6DC5BCd6FBB75b49dCd0204E966732392
```