> 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/quick-start.md).

# Quick Start

### 1. Base URL

```
https://api.x402.unibase.com/v2
```

BSC mainnet and testnet supported.

### 2. Health Check

```bash
curl "https://api.x402.unibase.com/v2/health"
```

### 3. Key Endpoints

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

### 4. Protocol Flow

1. Server returns **402** with payment spec
2. Client signs payment, sends proof
3. Unibase Pay verifies and settles on-chain

### 5. Supported (V2)

* **Assets**: All ERC20 via Permit2; EIP-3009 gasless
* **Scheme**: exact

### Next Steps

* [API Reference](/unibase-docs/unibase-pay/api-reference.md)
* [Privy Wallet](/unibase-docs/unibase-pay/privy-wallet.md) — Agent custodial wallet
* [x402 Protocol](https://x402.org)