# Introduction

Our SDK provides a few methods to interact with ERC20 tokens. Use this section to help transfer, withdraw, deposit, and build swap orders for your tokens. Currently the Loopring DEX only supports tokens that are registered in our contract.

You can find the list of tokens by using the `api/v3/exchange/info`.

If you would like to register a new token, please submit a registration request here:

<https://loopringexchange.typeform.com/to/T0bgsodw?typeform-source=medium.com>


---

# Agent Instructions: Querying This Documentation

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

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs-protocol.loopring.io/erc20-tokens/introduction.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
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.