# Endpoint Node

## Intended Audience <a href="#intended-audience" id="intended-audience"></a>

* Anyone who wants to send transactions or query the state of Klaytn network using [Klaytn APIs](https://archive-docs.klaytn.foundation/content/dapp/json-rpc) needs to do so via an Endpoint Node.
* Endpoint Nodes are the interface to the Klaytn Network.

## Endpoint Node Overview <a href="#endpoint-node-overview" id="endpoint-node-overview"></a>

An Endpoint Node has the following roles and functions.

* Synchronize the blockchain data.
* Validate the blocks newly received.
* Handles query requests.
* Transmits transaction requests to the Proxy Nodes.

The Endpoint Node install binary comes with the following interfaces and utilities.

* JSON-RPC APIs: JSON-RPC server runs inside the node, and it exposes [APIs](https://archive-docs.klaytn.foundation/content/dapp/json-rpc) for Blockchain Application development. It has several node management APIs as well.
* Command-line Interface: Provides account management and node configuration functions. An interactive JavaScript console is also provided, that is attached to the node. JavaScript console implements most of the [caver-js APIs](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js).