# Schemas & Validation

## Overview

Ox ships [Zod](https://zod.dev) schemas for Ethereum data structures via the
[`ox/zod`](/zod) entrypoint. Most schemas are codecs that convert between the JSON-RPC wire
format (hex-string quantities) and the ergonomic decoded format used in application code
(`bigint`/`number`), and every schema doubles as a validator for untrusted input.

```ts twoslash
import { z } from 'ox/zod'

const value = z.decode(z.Uint256, '0x2a')
// @log: 42n
```

<Cards>
  <Card icon="lucide:badge-check" title="Validate with Zod" description="Import, decode, encode, and validate Ethereum data with Ox's Zod schemas." to="/guides/schemas/zod" />
</Cards>