> For the complete documentation index, see [llms.txt](https://docs.protocolink.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.protocolink.com/protocolink-sdk/common-sdk-interfaces/web3toolkit.md).

# Web3Toolkit

The `Web3Toolkit` class is used to interact with RPC in order to simplify the development process. It has the following properties and methods.

* Properties:
  * `chainId`: A readonly property that returns the current chain ID.
  * `network`: A readonly property that returns the `Network` object for the current chain.
  * `provider`: A readonly property that returns the web3 provider.
  * `nativeToken`: A readonly property that returns the `Token` class instance for the native token of the current chain.
  * `wrappedNativeToken`: A readonly property that returns the `Token` class instance for the wrapped native token of the current chain.
* Constructor:
  * `constructor(chainId, provider?)`: A constructor that initializes the `Web3Toolkit` object with a specified `chainId` and optional `provider`.
* Instance methods:
  * `getToken`: A method that returns a `Token` class instance for the specified token or token address.
  * `getTokens`: A method that returns an array of `Token` class instances for the specified array of token addresses.
  * `getBalance`: A method that returns the balance of the specified account for the specified token or token address.
  * `getAllowance`: A method that returns the allowance of the specified account for the specified token or token address and spender.
  * `getAllowances`: A method that returns an array of allowances for the specified account, array of token addresses, and spender.


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