> ## Documentation Index
> Fetch the complete documentation index at: https://docs.x402x.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Payment Platform（获取 EIP-7702 收款地址）

> 使用 app.x402x.ai 一键获取收款地址并接入 WTF Facilitator

## 目标

* 快速获得已部署 EIP-7702 的收款地址（Seller Address）
* 将地址用于 X402 服务端并对接 WTF Facilitator（BSC / USD1）

## 步骤

1. 打开平台：[`app.x402x.ai`](https://app.x402x.ai)
2. 连接钱包并注册 Seller
3. 部署 EIP-7702 授权（平台将为你的 EOA 注入受限代码）
4. 复制收款地址（与钱包地址一致，但具备合约能力）
5. 在服务端配置：

## 集成示例（Express）

```ts theme={null}
import express from "express";
import { X402Server } from "x402x-server";
import { Facilitator } from "x402x-facilitator";
import { createPublicClient, http } from "viem";
import { bsc } from "viem/chains";

const RECIPIENT_ADDRESS='0xYourSellerAddress';

const app = express();
const client = createPublicClient({ chain: bsc, transport: http() });
const facilitator = new Facilitator({
  recipientAddress: RECIPIENT_ADDRESS
});
const server = new X402Server({ client, facilitator });

app.post("/api/data", async (req, res) => {
  const USD1 = "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d";
  const requirements = await server.createRequirements({
    asset: USD1,
    maxAmountRequired: "1000000000000000000",
    description: "Premium API",
  });
  const result = await server.process(req.headers["x-payment"], requirements);
  if (!result.success) return res.status(result.status).json(result.response);
  return res.json({ data: "ok", payer: result.data.payer, txHash: result.data.txHash });
});
```

## 常见问题

* 平台只生成收款地址，不托管密钥；任何结算均由 Facilitator 代付 gas
* 当前网络为 BSC，仅支持 USD1；其他链/Token 将逐步开放

## 相关

<CardGroup cols={2}>
  <Card title="WTF Facilitator" icon="link" href="/user-guide/facilitator">
    BSC / USD1 的公共 Facilitator
  </Card>

  <Card title="Quick Start" icon="rocket" href="/user-guide/quick-start">
    快速使用
  </Card>
</CardGroup>