# RPC Methods

## Introduction

Here is the list of all Ethereum RPCs currently supported by the imToken App, for more information you can also refer to [the Ethereum RPCs](https://eth.wiki/json-rpc/API#json-rpc-methods).

imToken's DApp browser [no longer injects `web3` into the DApp](/developers/products/webview/release-changes.md#no-longer-injecting-web-3-js), we only inject the `Provider`.(you can get it using `window.ethereum`) For more information on how to start connecting to your wallet using `Provider`, please refer to:

* Our [Guide documentation](/developers/products/webview/development-guide-for-imtoken-dapp.md)
* MetaMask documentation: [Ethereum Provider](https://docs.metamask.io/guide/ethereum-provider.html)
* [EIP-1193: Ethereum Provider JavaScript API](https://eips.ethereum.org/EIPS/eip-1193)
* Or refer to the following  simplified code: 

```javascript
// Modern application
window.web3 = new Web3(ethereum)

// Or with ethers
await window.ethereum.enable()
const provider = new ethers.providers.Web3Provider(window.ethereum)
```

## Implemented RPCs

#### eth\_requestAccounts

> This method is specified by [EIP-1102](https://eips.ethereum.org/EIPS/eip-1102). 

Requests that the user provides an Ethereum address to be identified by.

**Returns**

`string[]` - An array of a single, hexadecimal Ethereum address string.

#### eth\_accounts

> This method is specified by [the Ethereum RPCs#eth\_accounts](https://eth.wiki/json-rpc/API#eth_accounts).

#### eth\_sendTransaction

> This method is specified by [the Ethereum RPCs#eth\_sendtransaction](https://eth.wiki/json-rpc/API#eth_sendtransaction).

#### personal\_sign

**alias:** `personal_sign` , `eth_signTypedData` , `eth_signTypedData_v3` `eth_signTypedData_v4`

Please refer to the [metamask docs (a-brief-history)](https://docs.metamask.io/guide/signing-data.html#a-brief-history) for the differences between the signature methods.

This method (`personal_sign`) is similar to `eth_sign`, but has better security, see [Technical Reference](https://github.com/ethereum/go-ethereum/pull/2940) for details.

> This method is specified by [the Ethereum RPCs#eth\_sign](https://eth.wiki/json-rpc/API#eth_sign).

#### net\_version

> This method is specified by [the Ethereum RPCs#net\_version](https://eth.wiki/json-rpc/API#net_version).

#### eth\_chainId

> This method is specified by [EIP-695](https://eips.ethereum.org/EIPS/eip-695)

#### wallet\_addEthereumChain

> This method is specified by [EIP-3085](https://eips.ethereum.org/EIPS/eip-3085).

An API for adding Ethereum chains to wallet applications.

{% hint style="warning" %}
API `wallet_addEthereumChain` only works on versions higher than `2.8.4`.
{% endhint %}

**Returns**

`null` - The method returns `null` if the request was successful, and an error otherwise.

**Params**

```typescript
type EthereumChain = {
  chainId: string
  chainName: string
  nativeCurrency: {
    name: string
    symbol: string // 2-6 characters long
    decimals: number // 18
  };
  rpcUrls: string[]
  blockExplorerUrls?: string[]
}
```

**Example**

```typescript
const chain = {
  chainId: "0x64",
  chainName: "xDAI Chain",
  rpcUrls: ["https://dai.poa.network"],
  iconUrls: [
    "https://xdaichain.com/fake/example/url/xdai.svg",
    "https://xdaichain.com/fake/example/url/xdai.png",
  ],
  nativeCurrency: {
    name: "xDAI",
    symbol: "xDAI",
    decimals: 18,
  },
}

window.ethereum.request({
  method: "wallet_addEthereumChain",
  params: [chain],
})
```

#### wallet\_switchEthereumChain

> This method is specified by [EIP-3326](https://eips.ethereum.org/EIPS/eip-3326).

An RPC method for switching the wallet’s active Ethereum chain.

{% hint style="warning" %}
API `wallet_switchEthereumChain` only works on versions higher than `2.10.0`.
{% endhint %}

**Returns**

`null` - The method returns `null` if the request was successful, and an error otherwise.

**Params**

```typescript
type EthereumChain = {
  chainId: string
}
```

**Example**

```typescript
const chain = {
  chainId: "0x64",
}

window.ethereum.request({
  method: "wallet_switchEthereumChain",
  params: [chain],

```

### DEPRECATED

#### enable (DEPRECATED) <a href="#ethereum-enable-deprecated" id="ethereum-enable-deprecated"></a>

{% hint style="warning" %}
Use `ethereum.request({ method: 'eth_requestAccounts' })` instead.
{% endhint %}

#### sendAsync (DEPRECATED) <a href="#ethereum-sendasync-deprecated" id="ethereum-sendasync-deprecated"></a>

{% hint style="warning" %}
Use `ethereum.request()` instead.
{% endhint %}

#### send (DEPRECATED) <a href="#ethereum-sendasync-deprecated" id="ethereum-sendasync-deprecated"></a>

{% hint style="warning" %}
Use `ethereum.request()` instead.
{% endhint %}

#### eth\_sign

{% hint style="warning" %}
Use `personal_sign` instead.
{% endhint %}

### Unimplemented

#### eth\_subscribe

This RPC interface is not currently implemented in imToken.&#x20;

## Feedback and help

If you need to leave feedback or request help from the developers, please create a topic in the [GitHub Discussion](https://github.com/consenlabs/webview/discussions/new).


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