> For the complete documentation index, see [llms.txt](https://document.sunprotocol.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://document.sunprotocol.io/zhi-neng-he-yue/sun-dai-bi-he-yue.md).

# SUN代币合约

标准：ERC-20，精度 `18`

### 用户常用查询

| 函数                                   | 用途            |
| ------------------------------------ | ------------- |
| `name()` / `symbol()` / `decimals()` | 查询代币基本信息      |
| `totalSupply()`                      | 查询当前总供应量      |
| `balanceOf(account)`                 | 查询钱包余额        |
| `allowance(owner,spender)`           | 查询授权额度        |
| `transferStatus()`                   | 查询普通转账是否开放    |
| `targetPool()`                       | 查询目标交易池地址     |
| `whitelist(account)`                 | 查询地址是否在转账白名单  |
| `feeReceiver()` / `sellRatio()`      | 查询卖出费用接收地址和费率 |

余额与供应量按 18 位精度显示：`ethers.formatUnits(raw, 18)`。

### 转账与授权

* `transfer(to,value)`：发送 SUN。
* `approve(spender,value)`：授权其他合约使用 SUN。
* `transferFrom(from,to,value)`：由已获授权的地址或合约转移 SUN。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://document.sunprotocol.io/zhi-neng-he-yue/sun-dai-bi-he-yue.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.