# RPC adapter Many of the EVM tools rely on [JSON-RPC](https://ethereum.github.io/execution-apis/api-documentation/) to communicate with the chain. Acala chain node doesn't provide these RPCs out of the box, so we implemented the EVM+ RPC Adapter, which is a service that wrap substrate RPC calls to provide these ETH JSON-RPCs. As a result, existing Ethereum dApp and tools can interact with EVM+ with minumum changes. For more information, checkout [eth rpc adapter docs](https://github.com/AcalaNetwork/bodhi.js/tree/master/packages/eth-rpc-adapter#acala-networketh-rpc-adapter). --- # 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://evmdocs.acala.network/tooling/rpc-adapter.md?ask= ``` 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.