# JSON-RPC & Providers

## Overview

For an application to communicate with the Ethereum network, it needs to connect to an Ethereum
Node and exchange messages in a standardized format. All Ethereum Nodes implement the
[JSON-RPC specification](https://www.jsonrpc.org/specification), and most Wallets expose an
[EIP-1193](https://eips.ethereum.org/EIPS/eip-1193) Provider interface on top of it. Ox provides
type-safe primitives for both sides of the wire: [`RpcRequest`](/api/RpcRequest),
[`RpcResponse`](/api/RpcResponse), [`RpcTransport`](/api/RpcTransport),
[`RpcSchema`](/api/RpcSchema), and [`Provider`](/api/Provider).

```ts twoslash
import { RpcTransport } from 'ox'

const transport = RpcTransport.fromHttp('https://1.rpc.thirdweb.com') // [!code hl]

const blockNumber = await transport.request({ method: 'eth_blockNumber' })
// @log: '0x1a2b3c'
```

<Cards>
  <Card icon="lucide:network" title="Send JSON-RPC Requests" description="Build request objects, send them over HTTP, and parse responses." to="/guides/rpc/requests" />

  <Card icon="lucide:server" title="Serve & Handle RPC Requests" description="Answer incoming requests in a server, worker, or wallet with typed errors." to="/guides/rpc/handling" />

  <Card icon="lucide:braces" title="Type-Safe RPC Schemas" description="Statically type methods, parameters, and return values end-to-end." to="/guides/rpc/schemas" />

  <Card icon="lucide:plug" title="Use EIP-1193 Providers" description="Wrap injected providers, create your own, and emit provider events." to="/guides/rpc/providers" />
</Cards>